An assimilated Bolian
An assimilated Cardassian
An assimilated Human
An assimilated Klingon
Members of the following species have been assimilated by the Borg Collective. Some species, such as the Kazon have been deemed unworthy of assimilation.
By designation
By name
By appearance
- Axum's species (VOY: "Unimatrix Zero", "Unimatrix Zero, Part II")
- Bajoran (VOY: "Survival Instinct")
- Bolian (Star Trek: First Contact)
- Brunali (VOY: "Collective")
- Cardassian (Star Trek: First Contact)
- Hirogen (VOY: "Unimatrix Zero, Parts I" & "II")
- Human/Humanoid (TNG: "Q Who", et. al)
- Kelis' species (VOY: "Unimatrix Zero, Parts I" & "II")
- Klingon (Star Trek: First Contact, VOY: "Unimatrix Zero, Parts I" & "II")
- Ktarian (VOY: "Dark Frontier")
- Lansor's species (VOY: "Survival Instinct")
- Norcadian (VOY: "Collective")
- Peliar Zel native (VOY: "Infinite Regress")
- Rasiinian (VOY: "Infinite Regress")
- Repto-humanoid (VOY: "Infinite Regress")
- Romulan (VOY: "Unity")
- Scaly Aliens (VOY: "Infinite Regress")
- Swarm species (VOY: "Infinite Regress")
- Tailheads (VOY: "Infinite Regress")
- Tarkalean (ENT: "Regeneration")
- Vidiian (VOY: "Infinite Regress")
- Voth (VOY: "Infinite Regress")
- Vulcan (VOY: "Unimatrix Zero, Parts I" & "II")
- Wysanti (VOY: "Collective")
- Varn's species (VOY: "Unimatrix Zero")
By reference
- Caatati (VOY: "Day of Honor")
- El-Aurian (TNG: "The Best of Both Worlds")
- Farn (VOY: "Unity")
- Ferengi (VOY: "Infinite Regress")
- Hazari (VOY: "Think Tank")
- Krenim (VOY: "Infinite Regress")
- Parein (VOY: "Unity")
- Sakari (VOY: "Blood Fever")
- Talaxian (VOY: "The Raven", "Mortal Coil")
- Terrelian (VOY: "Infinite Regress")