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For additional meanings of "First Contact", please see First Contact.

This is a list of first contacts between civilizations:

First contact events where the exact date is known

Human (pre-Federation)

Race Year Location Who Source Notes
Vulcans 2063 Bozeman, Montana, Earth Dr. Zefram Cochrane Star Trek: First Contact First contact between Humans and any alien species
Klingons 2151 Broken Bow, Oklahoma, Earth Starfleet Command ENT: "Broken Bow" Before the airing of this episode, first contact was widely assumed to have been in 2223
Suliban 2151 Interstellar space Enterprise NX-01 ENT: "Broken Bow"
Axanar 2151 Unknown system Enterprise NX-01 ENT: "Fight or Flight"
Xyrillians 2151 Interstellar Space Enterprise NX-01 ENT: "Unexpected"
Andorians 2151 P'Jem Captain Jonathan Archer ENT: "The Andorian Incident"
Akaali 2151 Akaali Homeworld Captain Jonathan Archer ENT: "Civilization"
Malurians 2151 Akaali Homeworld Captain Johnathan Archer ENT: "Civilization"
Valakians 2151 Interstellar space near Valakis Enterprise NX-01 ENT: "Dear Doctor" A rare first contact with a pre-warp civilization, even before this became prohibited
Menk 2151 Valakis Enterprise NX-01 ENT: "Dear Doctor" This primitive species shared its planet with the Valakians, and were encountered in association with them
Coridans 2151 Coridan Enterprise NX-01 ENT: "Shadows of P'Jem"
Eska 2151 Unnamed rogue planet Captain Johnathan Archer ENT: "Rogue Planet"
Wraiths 2151 Unnamed rogue planet Captain Johnathan Archer ENT: "Rogue Planet"
Kantare 2151 Unnamed Planet Enterprise NX-01 ENT: "Oasis"
Tandarans 2152 Detention Complex 26 Johnathan Archer, Travis Mayweather ENT: "Detained"
Kreetassans 2152 Kreetassa Enterprise NX-01 ENT: "Vox Sola"
Mazarites 2152 Mazar Enterprise NX-01 ENT: "Fallen Hero"
Risians 2152 Risa Enterprise NX-01 ENT: "Two Days and Two Nights"
Paraagans 2152 Paraagan II Enterprise NX-01 ENT: "Shockwave" Paraagan II was destroyed shortly after contact
Romulans 2152 Romulan minefield Enterprise NX-01 ENT: "Minefield" No visual contact with with the Romulans was made until 2266
Retellians 2152 Interstellar Space Charles Tucker III ENT: "Precious Cargo"
Kriosians 2152 Onboard a Retellian freighter Charles Tucker III ENT: "Precious Cargo"
Arkonians 2152 Arkonian Space Charles Tucker III ENT: "Dawn"
Tholians 2152 Presumably near Tholian Space Enterprise NX-01 ENT: "Future Tense" No visual contact was made by either group
Enolians 2152 Keto-Enol Enterprise NX-01 ENT: "Canamar"
Antarans 2153 Xantoras Enterprise NX-01 ENT: "The Breach"
Vissians 2153 Interstellar Space Enterprise NX-01 ENT: "Cogenitor"
Tellarites 2153 Unnamed planet Enterprise NX-01 ENT: "Bounty"
Xindi 2153 Xanthan homeworld Enterprise NX-01 ENT: "Rajiin"

Federation (22nd century)

Race Year Location Who Source Notes
Iotians 2168 Sigma Iotia II Horizon TOS: "A Piece of the Action" Civilization was pre-warp at time of first contact; contact was then lost until 2268

Federation (23rd century)

Race Year Location Who Source Notes
Talosians 2254 Talos IV Captain Christopher Pike TOS: "The Cage" Shortly thereafter, all contact with the species was prohibited in General Order 7 (TOS: "The Menagerie, Part I")
First Federation 2266 Border of First Federation space Captain James T. Kirk TOS: "The Corbomite Maneuver"
M-113 creature 2266 M-113 Captain James T. Kirk TOS: "The Man Trap" At the time of first contact virtually extinct
Thasians 2266 Space near Alpha V colony Captain James T. Kirk TOS: "Charlie X" The infant Charles Evans contacted the Thasians fourteen years prior
Miri's people 2266 Miri's homeworld Captain James T. Kirk TOS: "Miri"
Taurus II anthropoids 2267 Taurus II Spock TOS: "The Galileo Seven"
Amusement Park planet Caretaker people 2267 Shore Leave Planet Doctor Leonard McCoy TOS: "Shore Leave"
Trelane's species 2267 Gothos Captain James T. Kirk TOS: "The Squire of Gothos"
Gorn 2267 Cestus III Captain James T. Kirk TOS: "Arena"
Metrons 2267 Metron space Captain James T. Kirk TOS: "Arena" At the same time as first contact with the Gorn
Beta III natives 2267 Beta III Captain James T. Kirk TOS: "The Return of the Archons" A failed attempt at first contact was made one hundred years earlier by the Archon
Eminian Union 2267 Eminiar VII Captain James T. Kirk TOS: "A Taste of Armageddon"
Vendikar 2267 Eminiar VII Captain James T. Kirk TOS: "A Taste of Armageddon" Roughly at the same time as the Eminian Union
Horta 2267 Janus VI Captain James T. Kirk TOS: "The Devil in the Dark" First silicon-based lifeform encountered by the Federation
Organians 2267 Organia Captain James T. Kirk and Spock TOS: "Errand of Mercy"
Guardian of Forever 2267 Time vortex planet Doctor Leonard McCoy TOS: "The City on the Edge of Forever"
Neural parasites 2267 Deneva Captain James T. Kirk TOS: "Operation -- Annihilate!" Previously encountered by colonists of Ingraham B and Deneva
Ornithoids 2267 Pyris VII Captain James T. Kirk TOS: "Catspaw" Two members of this species from outside the galaxy claim to be agents for the Old Ones the relation of which to the species is unknown
Companion 2267 Gamma Canaris region Captain James T. Kirk TOS: "Metamorphosis" Previously encountered by Zefram Cochrane in 2119
Greek Gods 2267 Pollux IV Captain James T. Kirk TOS: "Who Mourns for Adonais?" Made contact with Earth around 2700 BC, but their alien nature was not understood by the primitive Humans
Redjac 2267 Argelius II Captain James T. Kirk TOS: "Wolf in the Fold" Previously encountered by Humans in the past, who were not aware of the creature's alien nature
Gamma Trianguli VI natives 2267 Gamma Trianguli VI Captain James T. Kirk TOS: "The Apple"
892-IV natives 2268 892-IV Captain James T. Kirk TOS: "Bread and Circuses" Previously encountered by Captain R.M. Merik in 2262
Providers 2268 Triskelion Captain James T. Kirk TOS: "The Gamesters of Triskelion"
Kelvans 2268 unnamed planet near galactic barrier Captain James T. Kirk TOS: "By Any Other Name" Possibly the first Andromeda Galaxy civilization ever encountered
Sargon's race 2268 Sargon's homeworld Captain James T. Kirk TOS: "Return to Tomorrow" At the time of first contact virtually extinct
Kohms and Yangs 2268 Omega IV Captain Ronald Tracey TOS: "The Omega Glory"
Melkotians 2268 Melkotian homeworld Captain James T. Kirk TOS: "Spectre of the Gun"
Gorgan 2268 Triacus Captain James T. Kirk TOS: "And the Children Shall Lead" At the time of first contact virtually extinct. Previously encountered by the Starnes Exploration Party
Morgs and Eymorgs 2268 Sigma Draconis VI Captain James T. Kirk TOS: "Spock's Brain"
Minarans 2268 Minara II Captain James T. Kirk TOS: "The Empath"
Vians 2268 Minara II Captain James T. Kirk TOS: "The Empath" At the same time as first contact with the Minarans
Fabrini 2268 Yonada Captain James T. Kirk TOS: "For the World is Hollow and I Have Touched the Sky" Fabrini were previously thought to have become extinct when their sun went nova 10,000 years ago
Beta XII-A entity 2268 Beta XII-A Captain James T. Kirk TOS: "Day of the Dove"
Platonians 2268 Platonius Captain James T. Kirk TOS: "Plato's Stepchildren" Made contact with Earth around 400 BC, but their alien nature was not discovered
Scalosians 2268 Scalos Captain James T. Kirk TOS: "Wink of an Eye"
Kalandans 2268 Kalandan outpost Captain James T. Kirk TOS: "That Which Survives" At the time of first contact virtually extinct
Cheron natives 2268 space near Ariannus Captain James T. Kirk TOS: "Let That Be Your Last Battlefield" At the time of first contact virtually extinct, except two individuals
Zetarians 2269 space near Memory Alpha Captain James T. Kirk TOS: "The Lights of Zetar" At the time of first contact virtually extinct
Excalbians 2269 Excalbia Captain James T. Kirk TOS: "The Savage Curtain"
Sarpeidon natives 2269 Sarpeidon Past Captain James T. Kirk TOS: "All Our Yesterdays" At the time of first contact all Sarpeidons had emigrated to the past, and may thus be considered extinct from a 23rd century perspective
Phylosians 2269 Phylos Captain James T. Kirk TAS: "The Infinite Vulcan"
Magnetic organism 2269 near Questar M-17 Captain James T. Kirk TAS: "Beyond the Farthest Star"
Taurus II inhabitants 2269 Taurus II Captain James T. Kirk TAS: "The Lorelei Signal"
Cosmic cloud 2269 space near Mantilles Captain James T. Kirk TAS: "One of Our Planets Is Missing"
Megans 2269 Megas-Tu Captain James T. Kirk TAS: "The Magicks of Megas-Tu" Made contact with Earth around the 17th century, but their alien nature was not understood by Humans
Aquans 2269 Argo Captain James T. Kirk TAS: "The Ambergris Element"
Lactrans 2269 Lactra VII Lieutenant Commander Tom Markel TAS: "The Eye of the Beholder"
Delta Theta III aborigines 2270 Delta Theta III Captain James T. Kirk TAS: "Bem"
Delta Theta III entity 2270 Delta Theta III Captain James T. Kirk TAS: "Bem" At the same time as first contact with the Delta Theta III aborigines
Kukulkan's species 2270 space near the Sol system Captain James T. Kirk TAS: "How Sharper Than a Serpent's Tooth" Made contact with Earth in the past, but their alien nature was not understood by the primitive Humans
Arret natives 2270 Arret Captain James T. Kirk TAS: "The Counter-Clock Incident"
Whale Probe 2286 Sol system USS Saratoga (NCC-1887) Star Trek IV: The Voyage Home Made contact with other Earth creatures in the past (notably the Humpback whales)
Sha Ka Ree entity 2287 Sha Ka Ree Captain James T. Kirk Star Trek V: The Final Frontier

Federation (24th century)

Race Year Location Who Source Notes
Q 2364 Near Deneb IV USS Enterprise-D TNG: "Encounter at Farpoint"
Ferengi 2364 Outpost 63, Delphi Ardu system USS Enterprise-D TNG: "The Last Outpost" Prior to "official" first contact, the species was already known to the Federation through rumors
Beta Renner cloud 2364 Interstellar space between Parliament and Antica USS Enterprise-D TNG: "Lonely Among Us"
Edo 2364 Rubicun III USS Enterprise-D TNG: "Justice"
Edo God 2364 Rubicun III USS Enterprise-D TNG: "Justice"
Microbrain 2364 Velara III USS Enterprise-D TNG: "Home Soil" The Microbrain entity decided not to engage in relations with the Federation for the next three centuries
Aldeans 2364 Aldea USS Enterprise-D TNG: "When The Bough Breaks" This species was previously thought to be legendary
Armus 2364 Vagra II USS Enterprise-D TNG: "Skin of Evil"
Neural parasites 2364 Dytallix B Captains Tryla Scott and Jean-Luc Picard and commander William T. Riker TNG: "Conspiracy" These hostile creatures had apparently been aware of the Federation for some time, but chose not to reveal themselves and rather infiltrate Starfleet
Ian Troi entity 2365 Interstellar space USS Enterprise-D TNG: "The Child"
Nagilum 2365 hole in space USS Enterprise-D TNG: "Where Silence Has Lease"
Dremans 2365 Drema IV Lieutenant Commander Data TNG: "Pen Pals"
Borg 2365 System J-25 USS Enterprise-D TNG: "Q Who"
Pakleds 2365 Rhomboid Dronegar sector 006 USS Enterprise-D TNG: "Samaritan Snare"
Husnocks 2366 Delta Rana IV Delta Rana IV colonists TNG: "The Survivors" The entire species became extinct soon after contact
Douwd 2366 Delta Rana IV USS Enterprise-D TNG: "The Survivors" Members of this species have lived among Humans previously, with their alien nature unknown to them
Mintakans 2366 Mintaka III USS Enterprise-D TNG: "Who Watches The Watchers" A pre-warp civilization, first contact was made accidentally and it can be assumed that no further contacts will be maintained after the 2366 incident
Koinonians (of the Non-corporeall variety) 2366 Koinonian homeworld USS Enterprise-D TNG: "The Bonding"
Unnamed humanoid species 2366 Lonka Cluster USS Enterprise-D TNG: "Allegiance"
Gomtuu's species 2366 Beta Stromgren system Tam Elbrun TNG: "Tin Man"
Zalkonians 2366 Interstellar space USS Enterprise-D TNG: "Transfigurations"
Barash's species 2367 Alpha Onias III Commander William T. Riker TNG: "Future Imperfect"
Two-dimensional lifeforms 2367 Interstellar space USS Enterprise-D TNG: "The Loss"
Ardra's species 2367 Ventax II USS Enterprise-D TNG: "Devil's Due"
Paxans 2367 Ngame Nebula USS Enterprise-D TNG: "Clues" All memories and records of the contact were erased
Malcorians 2367 Malcor III Commander William T. Riker TNG: "First Contact" First contact was accidentally made days before they were to initiate their first warp drive; subsequently, the Malcorian government decided to postpone the warp tests and focus on domestic issues first, keeping the public in the dark about the existence of aliens
Spaceborne lifeforms 2367 Alpha Omicron system USS Enterprise-D TNG: "Galaxy's Child"
Tyken's Rift being 2367 Tyken's Rift USS Enterprise-D TNG: "Night Terrors"
Tarchannen III species 2367 Tarchannen III USS Enterprise-D TNG: "Identity Crisis" Previously encountered by the USS Victory in 2362; the species consists of other humanoids infected with a parasite, transforming their DNA
Cytherians 2367 Galactic core USS Enterprise-D TNG: "The Nth Degree"
Lysians 2368 Lysian system USS Enterprise-D TNG: "Conundrum"
Satarrans 2368 Lysian system USS Enterprise-D TNG: "Conundrum"
Ux-Mal 2368 Mab-Bu VI USS Enterprise-D TNG: "Power Play"
FGC 47 lifeforms 2368 FGC 47 USS Enterprise-D TNG: "Imaginary Friend"
Kataan natives 2368 Parvenium system Captain Jean-Luc Picard TNG: "The Inner Light" The species was virtually extinct at time of first contact
Devidians 2368 Devidia II USS Enterprise-D TNG: "Time's Arrow" Previously encountered by Humans in the 19th century who didn't understand their alien nature
Solanogen-based lifeforms 2369 Amargosa Diaspora USS Enterprise-D TNG: "Schisms"
Prophets 2369 Bajoran wormhole Commander Benjamin Sisko DS9: "Emissary"
Coalescent organism 2369 Relay Station 47 USS Enterprise-D TNG: "Aquiel"
Tosk 2369 Deep Space 9 Chief Miles O'Brien DS9: "Captive Pursuit" First contact with a Gamma Quadrant species
Hunters 2369 Deep Space 9 Deep Space 9 crew DS9: "Captive Pursuit"
Wadi 2369 Unknown Gamma Quadrant location Vulcan exploratory mission DS9: "Move Along Home" First "proper" contact with a Gamma Quadrant species
Nol-Ennis 2369 Unnamed Gamma Quadrant moon USS Yangtzee Kiang DS9: "Battle Lines"
Ennis 2369 Unnamed Gamma Quadrant moon USS Yangtzee Kiang DS9: "Battle Lines"
Ancient humanoids 2369 Vilmor II Captain Jean-Luc Picard TNG: "The Chase" Species virtually extinct at time of contact
Unnamed non-corporeal Gamma Quadrant species 2369 Deep Space 9 Deep Space 9 crew DS9: "If Wishes Were Horses"
Quantum singularity lifeforms 2369 Interstellar space, supposedly near Romulan space USS Enterprise-D TNG: "Timescape"
Rakhari 2369 unknown unknown DS9: "Vortex"
Skrreea 2370 Deep Space 9 Deep space 9 crew DS9: "Sanctuary"
Boraalans 2370 USS Enterprise-D Nikolai Rozhenko TNG: "Homeward" A pre-warp civilization, contact was made when a Federation observer purposely made first contact in direct violation of the Prime Directive in order to save them from extinction
Anaphasic lifeform 2370 Caldos II USS Enterprise-D TNG: "Sub Rosa" Previously living among Humans for centuries, who didn't understand it's alien nature
Parada 2370 Unknown, likely Gamma Quadrant Deep Space 9 crew DS9: "Whispers"
Barkonians 2370 Barkon IV Lieutenant Commander Data TNG: "Thine Own Self"
D'Arsay 2370 Sector 1156 USS Enterprise-D TNG: "Masks" Species virtually extinct at time of contact
Yaderans 2370 Unnamed Yaderan colony Odo and Lieutenant Jadzia Dax DS9: "Shadowplay"
Dominion 2370 Unnamed Gamma Quadrant planet Commander Benjamin Sisko DS9: "The Jem'Hadar" The Federation had encountered one Changeling, Odo, before this time
Meridian inhabitants 2371 Meridian USS Defiant (NX-74205) DS9: "Meridian"
Argrathi 2372 Argratha USS Defiant (NX-74205) DS9: "Hard Time"
Onaya's species 2372 Deep Space 9 Jake Sisko DS9: "The Muse" Previously encountered by Humans who didn't understand the species' alien nature
Teplans 2372 Teplan homeworld USS Defiant (NX-74205) DS9: "The Quickening"
Pah-wraiths 2373 Deep Space 9 Chief Miles O'Brien DS9: "The Assignment"
Ba'ku 2375 Ba'ku Lieutenant Commander Data Star Trek: Insurrection

Federation (Delta Quadrant species encountered during 24th Century)

Race Year Location Who Source Notes
Nacene 2371 Ocampa System USS Equinox VOY: "Caretaker"
Krowtonan Guard 2371 Delta Quadrant space near Ocampa USS Equinox VOY: "Equinox"
Talaxians 2371 Ocampa System USS Voyager VOY: "Caretaker"
Ocampa 2371 Ocampa USS Voyager VOY: "Caretaker"
Kazon 2371 Ocampa USS Voyager VOY: "Caretaker"
Vidiians 2371 Unnamed rogue planetoid USS Voyager VOY: "Phage"
Baneans 2371 Banea USS Voyager VOY: "Ex Post Facto"
Vhnori 2371 Vhnori homeworld USS Voyager VOY: "Emanations"
Sikarians 2371 Sikaris USS Voyager VOY: "Prime Factors"
Photonic lifeform 2371 Near a protostar USS Voyager VOY: "Heroes and Demons"
Komar 2371 Unnamed Delta Quadrant dark matter nebula USS Voyager VOY: "Cathexis"
Haakonians 2371 Interstellar space USS Voyager VOY: "Jetrel"
Repto-humanoids 2372 Planet Hell USS Voyager VOY: "Parturition"
Botha 2372 Botha space USS Voyager VOY: "Persistence of Vision"
Sky Spirits 2372 Sky Spirits' homeworld USS Voyager VOY: "Tattoo" The species have visited Earth ca. 45,000 years ago, but their alien nature was not understood by primitive Humans
Mokra/Alsaurians 2372 Mokra Homeworld USS Voyager VOY: "Resistance"
Automated Personnel Units 2372 Delta Quadrant USS Voyager VOY: "Prototype"
Drayans 2372 Drayan II USS Voyager VOY: "Innocence"
Kohl 2372 Kohl colony USS Voyager VOY: "The Thaw" This species is likely virtually extinct
Nechani 2373 Nechani Homeworld USS Voyager VOY: "Sacred Ground"
Akritirians 2373 Akritiri USS Voyager VOY: "The Chute"
Enarans 2373 Fima colony USS Voyager VOY: "Remember" Most likely first contact at that time since Voyager reached their region then
The Swarm 2373 Delta Quadrant, near Swarm controlled space USS Voyager VOY: "The Swarm"
Mislenites 2373 Delta Quadrant, near Swarm controlled space USS Voyager VOY: "The Swarm" Unofficial first contact as the only member encountered, Chardis, eventually died while being treated in sickbay
Ilari 2373 Interstellar space USS Voyager VOY: "Warlord"
Garan 2373 Garan mining colony, near Tak Tak space USS Voyager VOY: "Macrocosm" Most likely first contact at that time since Voyager reached their region then
Tak Tak 2373 Delta Quadrant USS Voyager VOY: "Macrocosm"
Marayna's species 2373 Inversion nebula USS Voyager VOY: "Alter Ego"
Kolaati 2373 Nekrit Expanse USS Voyager VOY: "Fair Trade"
Unnamed non-corporeal lifeform 2373 Unnamed planet Captain Kathryn Janeway VOY: "Coda"
Nezu 2373 Unnamed Nezu Colony USS Voyager VOY: "Rise" Most likely first contact at that time since Voyager reached their region then
Mikhal Travelers 2373 Unnamed Mikhal Traveler outpost USS Voyager VOY: "Darkling"
Taresians 2373 Taresia USS Voyager VOY: "Favorite Son"
Nasari 2373 Nasari space, near the Taresia system USS Voyager VOY: "Favorite Son"
Voth 2373 Delta Quadrant, Voth city ship USS Voyager VOY: "Distant Origin" It is quite possible that the Voth authorities covered this contact up
Nyrians 2373 Delta Quadrant USS Voyager VOY: "Displaced"
Jarleth's species 2373 Nyrian biosphere vessel USS Voyager VOY: "Displaced"
Species 8472 2373 Northwest Passage USS Voyager VOY: "Scorpion"
Vori 2374 Delta Quadrant planet USS Voyager VOY: "Nemesis"
Kradin 2374 Delta Quadrant planet USS Voyager VOY: "Nemesis"
Caatati 2374 Interstellar space USS Voyager VOY: "Day of Honor" The entire species, except for 27 ships, was assimilated by the Borg at the time of contact
Serosians 2374 Interstellar space USS Voyager VOY: "Revulsion"
B'omar 2374 Edge of B'omar space USS Voyager VOY: "The Raven" Most likely first contact at that time since Voyager reached their region then
Srivani 2374 Delta Quadrant USS Voyager VOY: "Scientific Method"
Krenim 2374 Krenim Imperium space USS Voyager VOY: "Year of Hell"
Zahl 2374 Zahl space USS Voyager VOY: "Year of Hell"
Mari 2374 Mari homeworld USS Voyager VOY: "Random Thoughts"
Unnamed humanoid species 2374 Delta Quadrant USS Voyager VOY: "Concerning Flight"
Unnamed humanoid species 2374 Delta Quadrant USS Voyager VOY: "Concerning Flight"
Tau's species 2374 Delta Quadrant USS Voyager VOY: "Concerning Flight"
Dream species 2374 Dream species planet USS Voyager VOY: "Waking Moments"
Hirogen 2374 Transmission from a Hirogen communications network relay station USS Voyager VOY: "Message in a Bottle"
Entharans 2374 Delta Quadrant USS Voyager VOY: "Retrospect" Most likely first contact at that time since Voyager reached their region then
Unnamed DNA switching lifeform 2374 Interstellar space USS Voyager VOY: "Vis à Vis"
Daelen's species 2374 Interstellar space USS Voyager VOY: "Vis à Vis"
Steth's species 2374 Interstellar space USS Voyager VOY: "Vis à Vis"
Allos' species 2374 M-class moon USS Voyager VOY: "The Omega Directive"
Ramurans 2374 Delta Quadrant USS Voyager VOY: "Unforgettable" Though this species tried hard to hide all evidence of their existence, record of them exists in Chakotay's written testimonial
Kyrians 2374 Delta Quadrant USS Voyager VOY: "Living Witness" Date might be wrong, as every other aspect of the encounter was severely distorted by said Kyrian historians, though it was certainly between 2371 and 2378
Vaskans 2374 Delta Quadrant USS Voyager VOY: "Living Witness" Date might be wrong, as every other aspect of the encounter was severely distorted by said Kyrian historians, though it was certainly between 2371 and 2378
Biomimetic species 2374 Class Y planet USS Voyager VOY: "Demon"
Species 116 2374 Unnamed trading colony USS Voyager VOY: "Hope and Fear" At the time of first contact the species was almost virtually extinct due to Borg assimilation
Malons 2375 the Void USS Voyager VOY: "Night"
Night Aliens 2375 the Void USS Voyager VOY: "Night"
Unnamed Cytoplasmic lifeform 2375 Delta Quadrant USS Voyager VOY: "Nothing Human"
Moneans 2375 The Waters USS Voyager VOY: "Thirty Days"
Species 6339 2375 Grid 124, Octant 22-theta USS Voyager VOY: "Infinite Regress" At the time of first contact the species was almost virtually extinct due to Borg Assimilation
Brenari 2375 Border of the Devore Imperium USS Voyager VOY: "Counterpoint" Most likely first contact at that time since Voyager reached their region then
Devore 2375 Border of the Devore Imperium USS Voyager VOY: "Counterpoint" Most likely first contact at that time since Voyager reached their region then
Noss' species 2375 Unnamed planet USS Voyager VOY: "Gravity"
Unnamed photonic lifeforms 2375 Border of the Devore Imperium USS Voyager VOY: "Bride of Chaotica!"
Chaotic Space Aliens 2375 Chaotic space USS Voyager VOY: "The Fight"
Qatai's species 2375 Delta Quadrant USS Voyager VOY: "Bliss"
Telepathic pitcher plant 2375 Delta Quadrant USS Voyager VOY: "Bliss"
Varro 2375 Delta Quadrant USS Voyager VOY: "The Disease"
Hazari 2375 Delta Quadrant USS Voyager VOY: "Think Tank" Most likely first contact at that time since Voyager reached their region then
Kadi 2375 Kadi Homeworld USS Voyager VOY: "Someone to Watch Over Me"
Hierarchy 2376 Delta Quadrant USS Voyager VOY: "Tinker Tenor Doctor Spy"
Vaadwaur 2376 Vaadwaur homeworld USS Voyager VOY: "Dragon's Teeth"
Ba'neth 2376 Delta Quadrant USS Voyager VOY: "Riddles"
Kesat 2376 Delta Quadrant USS Voyager VOY: "Riddles"
Kartelans 2376 Delta Quadrant USS Voyager VOY: "The Voyager Conspiracy"
Norcadians 2376 Norcadia Prime USS Voyager VOY: "Tsunkatse"
Pendari 2376 Norcadia Prime USS Voyager VOY: "Tsunkatse"
Kelemane's species 2376 Kelemane's planet orbit USS Voyager VOY: "Blink of an Eye" This species was not yet warp-capable when they made contact with Voyager, though it is conceivable they were by the time Voyager left
Qomar 2376 Delta Quadrant USS Voyager VOY: "Virtuoso"
Wysanti 2376 Delta Quadrant USS Voyager VOY: "Collective"
Saavdra's species 2376 Tarakis USS Voyager VOY: "Memorial"
Nakan 2376 Tarakis USS Voyager VOY: "Memorial" The species was virtually extinct at time of contact
Kobali 2376 Delta Quadrant USS Voyager VOY: "Ashes to Ashes"
Brunali 2376 Brunali homeworld USS Voyager VOY: "Child's Play" Voyager encountered a Brunali before reaching their home planet, though this is not considered first contact as the individual was a child, not able to represent its species (VOY: "Collective")
Telsians 2376 Telsius Prime USS Voyager VOY: "Live Fast and Prosper"
Kelis' species 2376 Unnamed planet Lieutenant B'Elanna Torres VOY: "Muse"
Terrellians 2377 Delta Quadrant USS Voyager VOY: "Drive" Most likely first contact at that time since Voyager reached their region then
Aksani 2377 Delta Quadrant USS Voyager VOY: "Drive" Most likely first contact at that time since Voyager reached their region then
Chessu 2377 Delta Quadrant USS Voyager VOY: "Drive" Most likely first contact at that time since Voyager reached their region then
Imhotep 2377 Delta Quadrant USS Voyager VOY: "Drive" Most likely first contact at that time since Voyager reached their region then
Lokirrim 2377 Delta Quadrant USS Voyager VOY: "Body and Soul"
Kraylor 2377 Delta Quadrant USS Voyager VOY: "Nightingale" Most likely first contact at that time since Voyager reached their region then
Annari 2377 Delta Quadrant USS Voyager VOY: "Nightingale" Most likely first contact at that time since Voyager reached their region then
Nygeans 2377 Delta Quadrant USS Voyager VOY: "Repentance"
Benkarans 2377 Delta Quadrant USS Voyager VOY: "Repentance"
Fantome's species 2377 the Void USS Voyager VOY: "The Void"
Nar Shaddan 2377 Delta Quadrant USS Voyager VOY: "Workforce"
Quarren 2377 Quarra USS Voyager VOY: "Workforce"
Norvalians 2377 Delta Quadrant, most likely Quarra USS Voyager VOY: "Workforce" Most likely first contact at that time since Voyager reached their region then
Uxali 2378 Uxal USS Voyager VOY: "Friendship One" Pre-warp at the time of first contact
Ledosians 2378 Ledos USS Voyager VOY: "Natural Law"
Ventu 2378 Ledos Chakotay, Seven of Nine VOY: "Natural Law"

Other species

Race 1 Race 2 Year Location Who Source Notes
Klingons Organians 2267 Organia Kor TOS: "Errand of Mercy" At exactly the same time as Federation-Organian first contact; at least one Klingon cruiser had unknowingly made contact with Organians some years before 2154 (ENT: "Observer Effect")
Gem's species Vians 2268 Minara II Gem TOS: "The Empath"
Bajorans Changelings 2337 Denorios belt Odo DS9: "The Alternate" Other Changelings, and their association with the Dominion, remained unknown until 2371
Ferengi Stakoron 2369 unknown unknown DS9: "The Nagus"
Ferengi Dominion 2370 Unknown Quark and Pel DS9: "Rules of Acquisition" First contact was made through the Karemma; though the Federation also made contact with the Dominion in 2370, the Ferengi were the first Alpha Quadrant species to make contact
Borg Species 6339 2371 Unknown, presumably Delta Quadrant Unknown VOY: "Infinite Regress"

Species where approximate first contact dates are known

Humans

Lower limits of 2063 obviously refer to the year of Earth's first official first contact.
Race approximate Year Location Who Source Notes
Bolians Between 2063 and 2099 Unknown Unknown VOY: "11:59"
Draylaxians Between 2063 and 2126 Unknown Unknown ENT: "Fortunate Son" Based on Travis Mayweather's birthdate, he was born on the Draylax/Vega run
Trillius Prime inhabitants Between 2063 and the 2130s Unknown Unknown ENT: "Broken Bow" Travis Mayweather visited the planet in sixth grade (he was born in 2126)
Denobulans Between 2063 and the 2130s Unknown Unknown ENT: "Cold Station 12", "Demons" Based on the earliest known operating date of Cold Station 12, and corroborated by estimates of when Nathan Samuels was 18
Teneebian moons inhabitants Between 2063 and 2140s Unknown Unknown ENT: "Broken Bow" Travis Mayweather visited these before he started his Starfleet training
Orions Between 2063 and 2152 Unknown Unknown ENT: "Horizon" However, Arik Soong, a rogue Human, seems to have had contact with Orions at least in the 2140s
Demerians Between 2063 and 2152 Unknown Unknown ENT: "Horizon"
Neubilia Prime inhabitants Between 2063 and 2153 Unknown Unknown ENT: "United" Before captain Mayweather's death in late 2152

Denobulans

Race approximate Year Location Who Source Notes
B'Saari Before 19th century Unknown Unknown ENT: "Future Tense" First Denobulan first contact, therefore before first contact between Denobulans and Antarans
Antarans Before 19th century Unknown Unknown ENT: "The Breach" Based on the end date of their last war
Bynar Before 2151 Unknown Unknown ENT: "Regeneration" Given Phlox's statement, it seems likely that he encountered the Bynar before he joined Enterprise; even if that assumption is false, the latest possible date is 2153, the year the episode played out

Vulcans

Race approximate Year Location Who Source Notes
Tellarites At the latest 1957 Unknown Unknown ENT: "Carbon Creek"
Andorians Early 20th century Unknown Unknown ENT: "Proving Ground"
Arkonians c. 2050s Unknown Unknown ENT: "Dawn" "nearly 100 years" before 2152
Tholians Before 2152 Unknown Unknown ENT: "Future Tense"
Cardassians Before 2240s Unknown Unknown DS9: "Trials and Tribble-ations" Based on Iloja of Prim living on Vulcan, somewhere between Dax's birth in 2018 and when Dax joined Emony Dax
Trill Before 2240s Unknown Unknown DS9: "Trials and Tribble-ations" Based on Emony Dax meeting a young Leonard McCoy

Federation

Race approximate Year Location Who Source Notes
Tamarians 2260s Unknown Unknown, possible captain Silvestri TNG: "Darmok" The Federation had encountered the Tamarians seven times in the hundred years before 2368, but formal relations were only established in that year due to vast differences in their methods of communication
Ktarians Before 2284 Unknown Unknown Star Trek Generations Based on the mention of Ktarian eggs in that year.
Yridians 24th century,before 2367 Unknown Captain Rudolph Ransom VOY: "Equinox" Yridians were thought to be extinct, though it is unknown for how long, as the 22nd century Vulcan database had info helpful in contacting them. (ENT: "Twilight") First contact occurred between Ransom's graduating from Starfleet Academy and his promotion to captain, which was in 2367 at the latest, based on knowledge of his encounter with a Klingon Bird-of-Prey in that year. Assuming that Branson's age in 2375 was 50, like John Savage, first contact was probably at most thirty years before 2367
Dosi 2369 or 2370 Unknown Unknown DS9: "Hard Time" The discovery of the Bajoran wormhole presumably provides an earliest possible date
Karemma between 2369 and 2371 Unknown Unknown DS9: "Hard Time" The discovery of the Bajoran wormhole presumably provides an earliest possible date
Argrathi between 2369 and 2372 Unknown Unknown DS9: "Hard Time" The discovery of the Bajoran wormhole presumably provides an earliest possible date
Ankari Between 2371 and 2375 Delta Quadrant USS Equinox VOY: "Equinox" It is not entirely clear when the Equinox encountered this species
Nucleogenic lifeforms Between 2371 and 2375 Delta Quadrant USS Equinox VOY: "Equinox" Contact was made at the same time as contact with the Ankari
Ponea Between 2371 and 2375 Delta Quadrant USS Equinox VOY: "Equinox"
Vojeans Before 2377 Delta Quadrant USS Voyager VOY: "Q2" Voyager moved trough their region of space several months before the events of VOY: "Q2"
Wyngari Before 2377 Delta Quadrant USS Voyager VOY: "Q2" Voyager moved trough their region of space several months before the events of VOY: "Q2"

Borg

Race approximate Year Location Who Source Notes
Species 116 Before c.2174 Unknown Unknown VOY: "Hope and Fear" Based on Arturis' statement in 2374 that his species managed to outwit the Borg for "centuries"
Species 262 Probably the 22nd century Unknown Unknown VOY: "The Omega Directive" Based on date of first assimilation
Species 263 Probably the 22nd century Unknown Unknown VOY: "The Omega Directive" Designation suggests first contact shortly after Species 263
Ktarians Before 2350s Unknown Unknown VOY: "Dark Frontier"
Species 571 Before 2368 Unknown Unknown VOY: "Survival Instinct" Designation suggests first contact shortly after Species 263
Species 8472 Circa 2373 Unknown Unknown VOY: "Scorpion"

Other species

Race 1 Race 2 Year Location Who Source Notes
Klingons Hur'q 14th century Unknown Unknown DS9: "The Sword of Kahless" A thousand year before 2372
Coridans Orions "centuries" before 2155 Unknown Unknown ENT: "Demons"
Bajorans Cardassians Between 16th and 22nd century unknown Unknown DS9: "Explorers", "Accession" Official First contact supposedly happened after the forgotten First contact by lightships, and before Akorem Laan dissapeared in the Bajoran year 9174 (as he was familiar with Cardassians)
Xindi Sphere Builders 2030s or shortly thereafter unknown Unknown ENT: "The Council" The Sphere Builders contacted the Xindi to help them in their Great Diaspora, which started after the destruction of Xindus in the 2030s
Valakians M'klexa Before 2151 Valakis Unknown ENT: "Dear Doctor" It is possible that the Menk made contact with the M'klexa at the same time
Valakians Ferengi Before 2151 Valakis Unknown ENT: "Dear Doctor" It is possible that the Menk made contact with the Ferengi at the same time
Ferengi Hupyrians Probably before 2151 Unknown Unknown ENT: "Acquisition" Based on a mention of Hupyrian beetle snuff

Unofficial first contacts

Often species have made contact much earlier than their official first contact dates, in events that become lost in history, are not reported, or whose full significance is not realized at the time.

Human and Federation

Race Year Location Who Source Notes
Sky Spirits Several times, starting 45,000 years ago. Earth, America Native Americans VOY: "Tattoo" This species engaged in genetically engineering the group of people that would become come to inhabit North and South America. They reached Earth from their Delta Quadrant homeworld in generation ships. It is not explicitly stated when they last visited Earth, but their description of the circumstances suggests it to be somewhere after the conquest of the Americas by Europeans.
Kukulkan's species Time of the Egyptian, Mayan, Aztec, and Chinese civilizations Earth Humans from around the world TAS: "How Sharper Than a Serpent's Tooth" Kukulkan was the last of his kind, he was mistaken for a god by the Earth natives and taught them technology and architecture; the true nature of this entity was discovered in 2270 by the crew of the USS Enterprise
Greek Gods Around 2700 BC Mediterranean region of Earth Inhabitants of ancient Greece TOS: "Who Mourns for Adonais?" This race was thought mythical until encountered by the USS Enterprise (NCC-1701) in 2267
Gary Seven's benefactors 4000 BC and later through human agents Earth Unknown TOS: "Assignment: Earth" This race kidnapped Humans from Earth so that their ancestors could work as their agents
Platonians 400 BC Earth Inhabitants of Ancient Greece TOS: "Plato's Stepchildren"
Onaya's species 100 BC, 1821 Earth Catullus, John Keats DS9: "The Muse"
Unknown Anaphasic lifeform species from 1647 on Glasgow Jessel Howard and her female descendants TNG: "Sub Rosa"
Q 1666, 1864, 1969 England, United States of America Isaac Newton, Thaddius Riker, Maury Ginsberg VOY: "Death Wish"
Preservers 18th century North America, Earth Native Americans TOS: "The Paradise Syndrome" They transplanted a group of Native Americans to Amerind
Skagarans 19th century United States of America, Earth Humans ENT: "North Star" They transplanted a group of several thousand Humans to one of their colonies to work as slaves; their descendants suggest they used mainly Americans of European descent
Redjac 1888 - 1891, 1932, 1974 London, Shanghai and Kiev Humans TOS: "The Paradise Syndrome" The true nature of this entity was discovered in 2267 by the crew of the Enterprise
El-Aurians Around 1893 San Francisco, Earth Humans TNG: "Time's Arrow" Guinan resided on Earth for a time, posing as a Human
Devidians 19th century San Francisco Humans TOS: "Time's Arrow" Devidians preyed on Humans in this era, though they seem to have gone completely undetected due to them existing slightly out of phase; Devidian-caused deaths were usually attributed to disease instead
Briori 1937 Earth 300 Human inductees VOY: "The 37's"
Ferengi 1947 Roswell, New Mexico Unnamed Air Force officials DS9: "Little Green Men" United States of America military apparently covered this up. The Ferengi were not 20th century Ferengi but rather time-traveling 24th century Ferengi. Other unidentified first contacts were made with the Ferengi in 2151 and 2355. (ENT: "Acquisition"; TNG: "The Battle")
Vulcans 1930, 1957, 1968, 1969, 1986, 1996, 2004 New York City, Carbon Creek, Pennsylvania, Earth orbit, San Francisco, Los Angeles, Detroit, Earth Residents of New York (especially Edith Keeler), Several inhabitants of Carbon Creek, John Christopher, a US Air Force Police sergeant, Roberta Lincoln, several Cetacean Institute visitors and Dr. Gillian Taylor, Rain Robinson, Loomis TOS: "The City on the Edge of Forever", ENT: "Carbon Creek", TOS: "Tomorrow is Yesterday", TOS: "Assignment: Earth", Star Trek IV: The Voyage Home, VOY: "Future's End", ENT: "Carpenter Street" According to Vulcan T'Pol, one of her ancestors and two colleagues were stranded on Earth when their ship crashed while observing Sputnik. Since Earth was a pre-warp civilization at the time, the Vulcans hid their alien nature from the locals while waiting for rescue. However, it is somewhat doubtful if this incident really happened.

Of these myriad contacts, only Christopher and the seargent (whose experiences were erased from the timeline), Lincoln, and Taylor (who returned to the 23rd century with the Enterprise crew), were ever made aware of the Spock's true "alien" nature.

Borg 2063 Earth Orbit Lily Sloane Star Trek: First Contact Time-traveling Borg from the 24th century tried to interrupt first contact between Humans and Vulcans. Lily Sloane, a 21st century Human, encountered Borg while on the USS Enterprise-E for medical treatment. (Star Trek: First Contact) Warp drive inventor Zefram Cochrane also seemed well informed on the Borg, though he never had direct contact. A second premature first contact event occurred in 2151, when several dead drones were found in the Arctic Circle and accidentally re-activated. ENT: "Regeneration"
Klingons 2369 Devidia II orbit Samuel Clemens TNG: "Time's Arrow, Part II" Samuel Clemens encountered a 24th century Klingon while on the Enterprise-D
Organians 2154 Unnamed uninhabited planet Enterprise NX-01 ENT: "Observer Effect" The Organians erased all memory of their encounter and planned to make official first contact in about 5,000 years; however, they were forced to make first contact little more than a hundred years later, in 2267, in order to stop the Federation-Klingon War
Paxans 2367 Planet in the Ngame Nebula USS Enterprise-D TNG: "Clues" Due to the extremely xenophobic nature of this species, the crew of the Enterprise-D agreed to erase all their memories and all records of their encounter. One can speculate that other such encounters may have happened

Other species

Race 1 Race 2 Year Location Who Source Notes
Cardassians Bajorans 16th century Cardassia Prime Unknown Bajoran lightship pioneers DS9: "Explorers" Prior to Benjamin Sisko's recreation of the voyage in 2371, as well as unearthing of new archaeological evidence on Cardassia Prime, Cardassians denied this ancient first contact
Talaxians Vaadwaur 1450s Unknown Unknown VOY: "Dragon's Teeth" This became legend on Talax

Alternate timelines

First contact events where the exact date is known

Race 1 Race 2 Reality Year Location Who Source Notes
Terran Empire Vulcans Mirror universe 2063 Bozeman, Montana, Earth Dr. Zefram Cochrane ENT: "In a Mirror, Darkly" First contact between Humans and any alien species; similar circumstances to first contact in the main universe
Federation Makull's species Overwritten timeline 2371 M-class Planet USS Voyager VOY: "Time and Again"

Species where approximate first contact dates are known

Race 1 Race 2 Reality Year Location Who Source Notes
Federation Cardassians Alternate reality before 2255 Unknown Unknown Star Trek Based on the availability of Cardassian sunrises on Earth; as discussed elsewhere on this page, Cardassians had made contact with the Federation in the main reality at the latest in the 2240s
Federation Betazoids Alternate reality before 2255 Unknown Unknown Star Trek Based on the availability of Jestral teas on Earth
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