• Unnamed humanoids (23rd century)
• Unnamed humanoids (24th century)
• Unnamed non-humanoids (24th century)
• Unnamed non-humanoids
• Unnamed humanoids (22nd century)
• Unnamed humanoids (29th century)
• Unnamed non-humanoids (22nd century)
• Unnamed humanoids (Distant past)
• Unnamed non-humanoids (Distant past)
• Unnamed humanoids (28th century)

A

• Abaddon's species
• Abdon's species
• The Albino's species
• Allos' species
• Alnschloss K'Bentayr's species
• Alsia's species
• Amarie's species
• Anaphasic lifeform
• Ancient humanoid
• Ancient insectoid
• Angel I native
• Antos native
• Arctus Baran's species
• Arret native
• Axum's species

B

• Bahrat's species
• Balok's species
• Barash's species
• Bathar's species
• Beta III native
• Beta Renner cloud
• Beta XII-A entity
• Biomimetic lifeform
• Bosaal's species
• Bre'el IV native

C

• Cheron native
• Class J nebula lifeform
• Cos' species
• Cosmic cloud
• Cytoplasmic lifeform

D

• D'Marr's species
• Daelen's species
• Dala's species
• Dark matter lifeform
• Dee'Ahn's species
• Delb II native
• Delta Theta III aborigine
• Delta Theta III entity
• Dikironium cloud creature
• Dirgo's species
• Distortion ring
• Dream species

E

• Edo God
• El-Adrel IV lifeform
• Em/3/Green's species
• Emi's species

F

• Fallit Kot's species
• Fantome's species
• Fennim's species
• Fuchida's species

G

• Gamelan V native
• Gaspar VII native

G cont.

• Gosis' species
• Grathon Tolar's species

H

• Hagath's species
• Hanon IV native
• Hansen's Planet anthropoid
• Haven native
• Hierarchy species
• Homn's species

I

• Unnamed insectoids

J

• J'onn's species
• Ja'Dar's species
• Jarleth's species

K

• Kago-Darr's species
• Kataan native
• Keenser's species
• Kelemane's species
• Kelis' species
• Kipp's species
• Kloog's species
• Kolos' species
• Kostolain native
• Krit's species
• Krole's species
• Kukulkan's species
• Kurros' species

L

• Larell's species

M

• M-113 creature
• Magnetic organism
• Makull's species
• Marayna's species
• Maturin's species
• Merchantman personnel
• Meridian inhabitants
• Multispectrum particle lifeform

N

• Nara's species
• Nassuc's species
• Neural native
• Neural parasite
• New Zealand Penal Settlement personnel
• Night Alien
• Nimbus III inhabitants
• Nitrium parasite
• Nocona's species
• Non-corporeal lifeform
• Noss' species
• Nucleogenic cloud being
• Nucleogenic lifeform

O

• Omega IV native
• Omnicordial species
• Oran'taku native
• Ornithoid lifeform
• Unnamed Orpheus Mining Colony miners

P

• Pardshay's species
• Peliar Zel native
• Pernaia Prime moon visitors
• Photonic lifeform
• Pomet's species
• Prah Mantoos' species

Q

• Qatai's species
• Quantum singularity lifeform

R

• Ramatis III native
• Repto-humanoid

R cont.

• Riska's species
• Rura Penthe inhabitants

S

• Saavdra's species
• San Francisco bar visitors
• Saowin's species
• Sarda's species
• Sargon's species
• Sarpeidon native
• Satler's species
• Sigma Draconis VI native
• Silicon-based lifeform
• Silicon-based parasite
• Silver Blood
• Sky Spirit
• Solanogen-based lifeform
• Sord's species
• Space-dwelling lifeform
• Spaceborne entity
• Star dancer
• Unnamed Starfleet Academy personnel
• Steth's species
• Sutok's species
• Swarm species
• Symbiotic lifeform

T

• Tamoon's species
• Tarchannen III species
• Tarquin's species
• Tash's species
• Tau's species
• Taurus II anthropoid
• Telepathic pitcher plant
• Tessic's species
• Think Tank members
• Tiron's species
• Torat's species
• Trag'tok's species
• Trajis Lo-Tarik's species
• Trajok's species
• Tret's species
• Tria's species
• Trianic energy being
• Two-dimensional lifeform
• Tyken's Rift being

U

• Umali's species
• Unnamed Shipyard Bar visitors
• Unnamed humanoids
• Unnamed non-humanoids (23rd century)

V

• Vadris III native
• Varn's species
• Varria's species
• Vekor's species
• Vilix'pran's species

W

• Worene's species

X

• Xenon-based lifeform

Y

• Yint's species
• Yost's species

Z

• Zjod's species
• Zobral's species
• Zolan's species
• Zoumas' species