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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 official 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 Interstellar space Enterprise NX-01
Axanar Unknown system ENT: "Fight or Flight"
Xyrillians Interstellar space ENT: "Unexpected"
Andorians The P'Jem monastery, on an unnamed planet Captain Jonathan Archer ENT: "The Andorian Incident"
Akaali Akaali homeworld Captain Jonathan Archer, T'Pol, Hoshi Sato, Charles Tucker III ENT: "Civilization" Contact limited to a single Akaali individual, Riaan
Malurians
Nausicaans Interstellar space Captain Jonathan Archer ENT: "Fortunate Son" This was the first official Starfleet first contact. Contact between the Nausicaans and the Earth Cargo Service personnel they've raided before seems likely.
Valakians 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 Valakis This primitive species shared its planet with the Valakians, and were encountered in association with them
Coridanites Coridan ENT: "Shadows of P'Jem"
Eska Dakala Captain Jonathan Archer ENT: "Rogue Planet"
Wraiths
Kantare Unnamed planet Enterprise NX-01 ENT: "Oasis"
Tandarans 2152 Detention Complex 26 Jonathan Archer, Travis Mayweather ENT: "Detained"
Kreetassans Interstellar space Enterprise NX-01 ENT: "Vox Sola"
Mazarites Mazar ENT: "Fallen Hero"
Risians Risa ENT: "Two Days and Two Nights"
Paraagans Paraagan II ENT: "Shockwave" Paraagan II was destroyed shortly after contact
Romulans Romulan minefield ENT: "Minefield" No visual contact wwith the Romulans was made until 2266
Retellians Interstellar space Charles Tucker III ENT: "Precious Cargo"
Kriosians On board a Retellian freighter
Arkonians Arkonian space ENT: "Dawn"
Tholians Presumably near Tholian space Enterprise NX-01 ENT: "Future Tense" No visual contact was made by either group
Enolians Keto-Enol ENT: "Canamar"
Antarans 2153 Xantoras ENT: "The Breach"
Vissians Interstellar space ENT: "Cogenitor"
Tellarites Unnamed planet ENT: "Bounty"
Xindi Xanthan planet ENT: "Rajiin"

Federation (22nd century)[]

Race Year Location Who Source Notes
Betans 2167 Beta III Archon TOS: "The Return of the Archons" Ship destroyed during first contact; contact was then lost until 2267
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
Eminians 2217 Eminiar VII USS Valiant TOS: "A Taste of Armageddon" Ship destroyed during first contact; contact was then lost until 2267
Ba'ul 2239 Kaminar USS Archimedes DIS: "The Sound of Thunder" The Ba'ul receives Starfleet's assurance that they would not interfere with Ba'ul's internal affairs.
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")
Tardigrade 2256 USS Glenn USS Glenn DIS: "Context Is for Kings"
Pahvans 2256 Pahvo Lieutenant Ash Tyler, Michael Burnham, Commander Saru DIS: "Si Vis Pacem, Para Bellum"
jahSepp 2257 USS Discovery Sylvia Tilly DIS: "Si Vis Pacem, Para Bellum"
Shepherd 2259 Near Persephone III Christopher Pike SNW: "Children of the Comet"
Kerkhovian Near Kerkhovian moon SNW: "Charades"
First Federation 2266 Border of First Federation space Captain James T. Kirk TOS: "The Corbomite Maneuver"
M-113 creature M-113 TOS: "The Man Trap" At the time of first contact virtually extinct
Thasians Outer space; between Thasus and Colony Alpha 5 TOS: "Charlie X" The infant Charles Evans contacted the Thasians fourteen years prior
Onlies Miri TOS: "Miri"
Taurus II anthropoids 2267 Taurus II Spock TOS: "The Galileo Seven"
Keeper Shore Leave Planet Doctor Leonard McCoy TOS: "Shore Leave"
Trelane's species Gothos Captain James T. Kirk TOS: "The Squire of Gothos"
Gorn Cestus III TOS: "Arena"
Metrons Metron space At the same time as first contact with the Gorn
Betans Beta III TOS: "The Return of the Archons" A failed attempt at first contact was made one hundred years earlier by the Archon
Eminian Union Eminiar VII TOS: "A Taste of Armageddon"
Vendikar Eminiar VII Roughly at the same time as the Eminian Union
Horta Janus VI TOS: "The Devil in the Dark" First silicon-based lifeform encountered by the Federation
Organians Organia Captain James T. Kirk and Spock TOS: "Errand of Mercy"
Guardian of Forever Time planet Doctor Leonard McCoy TOS: "The City on the Edge of Forever"
flying parasites Deneva Captain James T. Kirk TOS: "Operation -- Annihilate!" Previously encountered by colonists of Ingraham B and Deneva
Ornithoids Pyris VII 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 Gamma Canaris region TOS: "Metamorphosis" Previously encountered by Zefram Cochrane in 2119
Greek Gods Pollux IV TOS: "Who Mourns for Adonais?" Made contact with Earth around 2700 BC, but their alien nature was not understood by the primitive Humans
Redjac Argelius II TOS: "Wolf in the Fold" Previously encountered by Humans in the past, who were not aware of the creature's alien nature
Vaalians Gamma Trianguli VI TOS: "The Apple"
892-IV natives 2268 892-IV TOS: "Bread and Circuses" Previously encountered by Captain R.M. Merik in 2262
Providers Triskelion TOS: "The Gamesters of Triskelion"
Kelvans Kelvan colony planet located near galactic barrier TOS: "By Any Other Name" Possibly the first Andromeda Galaxy civilization ever encountered
Sargon's race Arret TOS: "Return to Tomorrow" At the time of first contact virtually extinct
Kohms and Yangs Omega IV Captain Ronald Tracey TOS: "The Omega Glory"
Melkotians Melkotian planet Captain James T. Kirk TOS: "Spectre of the Gun"
Gorgan Triacus TOS: "And the Children Shall Lead" At the time of first contact virtually extinct. Previously encountered by the Starnes Exploration Party
Morgs and Eymorgs Sigma Draconis VI TOS: "Spock's Brain"
Gem's species Minara II TOS: "The Empath"
Vians Minara II At the same time as first contact with the Gem's species
Fabrini Yonada 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 prior
Beta XII-A entity Beta XII-A TOS: "Day of the Dove"
Platonians Platonius TOS: "Plato's Stepchildren" Made contact with Earth around 400 BC, but their alien nature was not discovered
Scalosians Scalos TOS: "Wink of an Eye"
Kalandans Kalandan outpost TOS: "That Which Survives" At the time of first contact virtually extinct
Cheron natives space near Ariannus TOS: "Let That Be Your Last Battlefield" At the time of first contact virtually extinct, except two individuals
Zetarians 2269 space near Memory Alpha TOS: "The Lights of Zetar" At the time of first contact virtually extinct
Excalbians Excalbia TOS: "The Savage Curtain"
Sarpeidon natives Sarpeidon Past 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 Phylos TAS: "The Infinite Vulcan"
Magnetic organism near Questar M-17 TAS: "Beyond the Farthest Star"
Theela's species The second planet of the Taurean system TAS: "The Lorelei Signal"
Cosmic cloud space near Mantilles TAS: "One of Our Planets Is Missing"
Megans Megas-Tu TAS: "The Magicks of Megas-Tu" Made contact with Earth around the 17th century, but their alien nature was not understood by Humans
Aquans Argo TAS: "The Ambergris Element"
Lactrans 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 Delta Theta III At the same time as first contact with the Delta Theta III aborigines
Kukulkan's species space near the Sol system 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 Arret 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 Outpost 63, Delphi Ardu system TNG: "The Last Outpost" Prior to "official" first contact, the species was already known to the Federation through rumors
Beta Renner cloud Interstellar space between Parliament and Antica TNG: "Lonely Among Us"
Edo Rubicun III TNG: "Justice"
Edo God Rubicun III
Microbrain Velara III TNG: "Home Soil" The Microbrain entity decided not to engage in relations with the Federation for the next three centuries
Aldeans Aldea TNG: "When The Bough Breaks" This species was previously thought to be legendary
Armus Vagra II TNG: "Skin Of Evil"
Parasitic beings 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 hole in space TNG: "Where Silence Has Lease"
Dremans Drema IV Lieutenant Commander Data TNG: "Pen Pals"
Borg System J-25 USS Enterprise-D TNG: "Q Who"
Husnocks 2366 Rana IV Rana IV colonists TNG: "The Survivors" The entire species became extinct soon after contact
Douwd 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 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 Koinonian homeworld USS Enterprise-D TNG: "The Bonding"
Unnamed humanoid species Lonka Cluster USS Enterprise-D TNG: "Allegiance"
Gomtuu's species Beta Stromgren system Tam Elbrun TNG: "Tin Man"
Zalkonians Interstellar space USS Enterprise-D TNG: "Transfigurations"
Barash's species 2367 Alpha Onias III Commander William T. Riker TNG: "Future Imperfect"
Two-dimensional beings Interstellar space USS Enterprise-D TNG: "The Loss"
Ardra's species Ventax II USS Enterprise-D TNG: "Devil's Due"
Paxans Ngame Nebula USS Enterprise-D TNG: "Clues" All memories and records of the contact were erased
Malcorians 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 Alpha Omicron system USS Enterprise-D TNG: "Galaxy's Child"
Tyken's Rift being Tyken's Rift USS Enterprise-D TNG: "Night Terrors"
Tarchanne 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 Galactic core USS Enterprise-D TNG: "The Nth Degree"
Lysians 2368 Lysian system USS Enterprise-D TNG: "Conundrum"
Satarrans Lysian system USS Enterprise-D TNG: "Conundrum"
Ux-Mal Mab-Bu VI USS Enterprise-D TNG: "Power Play"
FGC-47 lifeforms FGC-47 USS Enterprise-D TNG: "Imaginary Friend"
Kataan natives Parvenium system Captain Jean-Luc Picard TNG: "The Inner Light" The species was virtually extinct at time of first contact
Devidians 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 Bajoran wormhole Commander Benjamin Sisko DS9: "Emissary"
Coalescent organism Relay Station 47 USS Enterprise-D TNG: "Aquiel"
Tosk Deep Space 9 Chief Miles O'Brien DS9: "Captive Pursuit" First contact with a Gamma Quadrant species
Hunters Deep Space 9 Deep Space 9 crew
Wadi Unknown Gamma Quadrant location Vulcan exploratory mission DS9: "Move Along Home" First "proper" contact with a Gamma Quadrant species
Nol-Ennis Unnamed Gamma Quadrant moon USS Yangtzee Kiang DS9: "Battle Lines"
Ennis
Ancient humanoids Vilmor II Captain Jean-Luc Picard TNG: "The Chase" Species virtually extinct at time of contact
Unnamed non-corporeal Gamma Quadrant species Deep Space 9 Deep Space 9 crew DS9: "If Wishes Were Horses"
Quantum singularity lifeforms Interstellar space, supposedly near Romulan space USS Enterprise-D TNG: "Timescape"
Rakhari unknown unknown DS9: "Vortex"
Skrreea 2370 Deep Space 9 Deep space 9 crew DS9: "Sanctuary"
Boraalans 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 Caldos colony USS Enterprise-D TNG: "Sub Rosa" Previously living among Humans for centuries, who didn't understand it's alien nature
Parada Unknown, likely Gamma Quadrant Deep Space 9 crew DS9: "Whispers"
Barkonians Barkon IV Lieutenant Commander Data TNG: "Thine Own Self"
D'Arsay Sector 1156 USS Enterprise-D TNG: "Masks" Species virtually extinct at time of contact
Yaderans Unnamed Yaderan colony Odo and Lieutenant Jadzia Dax DS9: "Shadowplay"
Dominion Unnamed Gamma Quadrant planet Commander Benjamin Sisko DS9: "The Jem'Hadar" The Federation had encountered one Changeling, Odo, before this time
Seltin Rakal's species 2371 Meridian USS Defiant (NX-74205) DS9: "Meridian"
Argrathi 2372 Argratha USS Defiant (NX-74205) DS9: "Hard Time"
Onaya's species Deep Space 9 Jake Sisko DS9: "The Muse" Previously encountered by Humans who didn't understand the species' alien nature
Teplans 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 planet Lieutenant Commander Data Star Trek: Insurrection
Galardonians 2379 Galar system USS Quito LD: "Second Contact"
Lapeerians 2381 Laap system USS Cerritos LD: "First First Contact" The USS Archimedes was initially dispatched to make first contact but was damaged en route to Lapeeria.

Federation (Delta Quadrant species encountered during 24th century)[]

Race Year Location Who Source Notes
Nacene 2371 Ocampa System USS Equinox VOY: "Caretaker"
Krowtonan Guard Delta Quadrant space near Ocampa VOY: "Equinox"
Talaxians Ocampa System USS Voyager VOY: "Caretaker"
Ocampa Ocampa USS Voyager
Kazon
Vidiians Unnamed rogue planetoid VOY: "Phage"
Banea Banea VOY: "Ex Post Facto"
Vhnori Vhnori homeworld VOY: "Emanations"
Sikarians Sikaris VOY: "Prime Factors"
Photonic lifeform Near a protostar VOY: "Heroes and Demons"
Komar Unnamed Delta Quadrant dark matter nebula VOY: "Cathexis"
Haakonians Interstellar space VOY: "Jetrel"
Reptohumanoids 2372 Planet Hell VOY: "Parturition"
Botha Botha space VOY: "Persistence of Vision"
Sky Spirits Sky Spirits' homeworld VOY: "Tattoo" The species visited Earth approximately 45,000 years ago, but their alien nature was not understood by primitive Humans
Augris' species Mokra-controlled planet VOY: "Resistance"
Automated Personnel Units Delta Quadrant VOY: "Prototype"
Drayans Drayan II VOY: "Innocence"
Viorsa's species Kohl settlement VOY: "The Thaw" This species is likely virtually extinct
Nechani 2373 Nechani homeworld VOY: "Sacred Ground"
Akritirians Akritiri VOY: "The Chute"
Enarans Fima colony VOY: "Remember" Most likely first contact at that time since Voyager reached their region then
The Swarm Delta Quadrant, near Swarm-controlled space VOY: "The Swarm"
Mislenites Delta Quadrant, near Swarm-controlled space VOY: "The Swarm" Unofficial first contact as the only member encountered, Chardis, eventually died while being treated in sickbay
Ilari Interstellar space VOY: "Warlord"
Garan Garan mining colony, near Tak Tak space VOY: "Macrocosm" Most likely first contact at that time since Voyager reached their region then
Tak Tak Delta Quadrant
Marayna's species Inversion nebula VOY: "Alter Ego"
Kolaati Nekrit Expanse VOY: "Fair Trade"
Unnamed non-corporeal lifeform Unnamed planet Captain Kathryn Janeway VOY: "Coda"
Nezu Unnamed Nezu Colony USS Voyager VOY: "Rise" Most likely first contact at that time since Voyager reached their region then
Etanian space near Unnamed Nezu Colony
Mikhal Travelers Unnamed Mikhal Traveler outpost VOY: "Darkling"
Taresians Taresia VOY: "Favorite Son"
Nasari Nasari space, near the Taresia system
Voth Delta Quadrant, Voth city ship VOY: "Distant Origin" It is quite possible that the Voth authorities covered this contact up
Nyrians Delta Quadrant VOY: "Displaced"
Jarlath's species Nyrian biosphere vessel
Species 8472 Northwest Passage VOY: "Scorpion"
Vori 2374 Delta Quadrant planet VOY: "Nemesis"
Kradin Delta Quadrant planet
Caatati Interstellar space VOY: "Day of Honor" The entire species, except for 27 ships, was assimilated by the Borg at the time of contact
Serosians Interstellar space VOY: "Revulsion"
B'omar Edge of B'omar space VOY: "The Raven" Most likely first contact at that time since Voyager reached their region then
Srivani Delta Quadrant VOY: "Scientific Method"
Krenim Krenim Imperium space VOY: "Year of Hell"
Zahl Zahl space
Mari Mari homeworld VOY: "Random Thoughts"
Unnamed humanoid species Delta Quadrant VOY: "Concerning Flight"
Tau's species
Dream Aliens Dream species planet VOY: "Waking Moments"
Hirogen Transmission from a Hirogen communications network relay station VOY: "Message in a Bottle"
Entharans Delta Quadrant VOY: "Retrospect" Most likely first contact at that time since Voyager reached their region then
Unnamed DNA switching lifeform Interstellar space VOY: "Vis à Vis"
Daelen's species Interstellar space
Steth's species Interstellar space
Allos' species M-class moon VOY: "The Omega Directive"
Ramurans Delta Quadrant VOY: "Unforgettable" Though this species tried hard to hide all evidence of their existence, record of them exists in Chakotay's written testimonial
Kyrians 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 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 Class Y planet VOY: "Demon"
Species 116 Unnamed trading colony VOY: "Hope and Fear" At the time of first contact the species was almost virtually extinct due to Borg assimilation
Malons 2375 The Void VOY: "Night"
Night Aliens The Void
Unnamed cytoplasmic lifeform Delta Quadrant VOY: "Nothing Human"
Moneans The Waters VOY: "Thirty Days"
Species 6339 Grid 124, Octant 22-theta VOY: "Infinite Regress" At the time of first contact the species was almost virtually extinct due to Borg assimilation
Brenari Border of the Devore Imperium VOY: "Counterpoint" Most likely first contact at that time since Voyager reached their region then
Devore Border of the Devore Imperium Most likely first contact at that time since Voyager reached their region then
Noss' species Unnamed planet VOY: "Gravity"
Photonic lifeforms Border of the Devore Imperium VOY: "Bride of Chaotica!"
Chaotic space aliens Chaotic space VOY: "The Fight"
Qatai's species Delta Quadrant VOY: "Bliss"
Telepathic pitcher plant
Varro VOY: "The Disease"
Hazari VOY: "Think Tank" Most likely first contact at that time since Voyager reached their region then
Kadi Kadi homeworld VOY: "Someone to Watch Over Me"
Hierarchy 2376 Delta Quadrant VOY: "Tinker Tenor Doctor Spy"
Turei Underspace VOY: "Dragon's Teeth"
Vaadwaur Vaadwaur homeworld VOY: "Dragon's Teeth"
Ba'Neth Delta Quadrant VOY: "Riddles"
Kesat
Norcadians Norcadia Prime VOY: "Tsunkatse"
Pendari Norcadia Prime
Kelemane's species Kelemane's planet orbit 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 Delta Quadrant VOY: "Virtuoso"
Wysanti VOY: "Collective"
Nakan Tarakis VOY: "Memorial"
The species was virtually extinct at time of contact
Kobali Delta Quadrant VOY: "Ashes to Ashes"
Brunali Brunali homeworld 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 Telsius Prime VOY: "Live Fast and Prosper"
Kelis' species Kelis' homeworld 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 Most likely first contact at that time since Voyager reached their region then
Chessu Most likely first contact at that time since Voyager reached their region then
Imhotep Most likely first contact at that time since Voyager reached their region then
Lokirrim VOY: "Body and Soul"
Kraylor VOY: "Nightingale" Most likely first contact at that time since Voyager reached their region then
Annari Most likely first contact at that time since Voyager reached their region then
Nygeans VOY: "Repentance"
Benkarans
Fantome's species the Void VOY: "The Void"
Nar Shaddan Delta Quadrant VOY: "Workforce"
Quarren Quarra
Norvalens Delta Quadrant, most likely Quarra Most likely first contact at that time since Voyager reached their region then
Otrin's species ca. 2248 / 2378 Otrin's homeworld VOY: "Friendship One" Pre-warp at the time of first contact
Ledosians 2378 Ledos VOY: "Natural Law"
Ventu Chakotay, Seven of Nine

Other species[]

Race 1 Race 2 Year Location Who Source Notes
Vulcans Klingons 2016 H'atoria system Unknown DIS: "The Vulcan Hello" Resulted in the destruction of a Vulcan starship at the hands of the Klingons. Vulcan ships met all subsequent encounters with a show of force to ward off any more attacks
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"
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 refer to the year of Earth's first official first contact.
Race Approximate year Location Who Source Notes
Kzin Shortly after 2067 Unknown Unknown TAS: "The Slaver Weapon" Four wars were fought "two hundred years" before 2269. This might have been an approximation, but it does suggest they took place very shortly after Earth achieved Warp. It might also have been after 2067, as "Friendship One" established that Humans still "had no idea" of what threats lay in space in that year.
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 the 19th century Unknown Unknown ENT: "Future Tense" First Denobulan first contact, therefore before first contact between Denobulans and Antarans
Antarans Before the 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 ca. 2050s Unknown Unknown ENT: "Dawn" "nearly one hundred 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. Cardassian voles were present on the Starfleet ship USS Discovery in 2256, although it also had a Gorn even though official first contact was not yet made.
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
Betazoids Before May 2256 Unknown Unknown DIS: "Magic to Make the Sanest Man Go Mad" Mentioned in the context of Harry Mudd supposedly having robbed a Betazoid bank prior to being imprisoned during the Federation-Klingon War. In the alternate timeline, Betazoids were first mentioned in 2255.
Tamarians 2260s Unknown Unknown, possible Captain A. 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"
Vau N'Akat circa 2434 Delta Quadrant PRO: "A Moral Star, Part 2" According to The Diviner, The Federation will make first contact in 50 years after the Protostar's discovery.
Vojeans Before 2377 Delta Quadrant USS Voyager VOY: "Q2" Voyager moved trough their region of space several months before the events of "Q2"
Wyngari Before 2377 Delta Quadrant USS Voyager VOY: "Q2" Voyager moved trough their region of space several months before the events of "Q2"

Borg[]

Race approximate Year Location Who Source Notes
Species 116 Before ca. 2174 Unknown Unknown VOY: "Hope and Fear" Based on Arturis' statement in 2374 that his species managed to outwit the Borg for "centuries"
Vaadwaur Before the 15th century Unknown Unknown VOY: "Hope and Fear"
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 262
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
Coridanites 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 disappeared 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
Klingons Ventaxians 2297 Ventax II Unknown TNG: "Devil's Due"
Bajorans Changelings mid-24th century Denorios belt Odo, Mora Pol DS9: "The Alternate" Other Changelings, and their association with the Dominion, remained unknown until 2371

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 was 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 Three hundred Human inductees VOY: "The 37's"
Ferengi 1947 Roswell, New Mexico Unnamed Air Force officials DS9: "Little Green Men" US 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", "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.

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 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
Kelpien 2239 Kaminar Lieutenant Philippa Georgiou ST: "The Brightest Star" Starfleet granted permission for Georgiou to take Saru knowing he could not return.
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.

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 prime 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. In the prime reality, Betazoids were first mentioned one year later, in 2256.
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