Borg species

Members of the following species have been assimilated by the Borg Collective.

By the 2370s, the Borg had assimilated thousands of species. (Star Trek: First Contact) Some species, such as the Kazon, have been deemed unworthy of assimilation. (VOY: "Drone", "Mortal Coil", "Relativity")

By name

Name	Number assimilated	Source
Axum's species	At least one as of 2377	VOY: "Unimatrix Zero"
Bajorans	At least one as of 2368	VOY: "Survival Instinct"
Bolians	At least one as of 2373	Star Trek: First Contact
Brunali	Many from the Brunali homeworld as of 2376	VOY: "Collective", "Child's Play"
Caatati	Millions from the Caatati homeworld as of 2374	VOY: "Day of Honor"
Cardassians	At least one as of 2374	VOY: "Infinite Regress"
El-Aurians	Many from the El-Aurian homeworld in the mid-23rd century	TNG: "Q Who", "I Borg"; Star Trek Generations
Farn	At least two as of 2368	VOY: "Unity"
Ferengi	At least one as of 2374	VOY: "Infinite Regress"
Hazari	At least one as of 2374	VOY: "Think Tank"
Hirogen	At least two as of 2377	VOY: "Unimatrix Zero"
Humans	Hundreds or thousands as of 2373	Star Trek: First Contact
Kelemane's species	At least one as of 2376	VOY: "Collective"
Kelis' species	At least one as of 2377	VOY: "Unimatrix Zero"
Klingons	At least six as of 2377	Star Trek: First Contact; VOY: "Infinite Regress", "Unimatrix Zero"
Krenim	At least one as of 2374	VOY: "Infinite Regress"
Ktarians	At least one as of the 2350s	VOY: "Dark Frontier"
"Nameless"	At least one as of the 2380s	PIC: "Maps and Legends"
Norcadians	At least one as of 2376	VOY: "Collective"
Parein	At least two as of 2368	VOY: "Unity"
Pelians	At least one as of 2377	VOY: "Unimatrix Zero"
Rasiinians	At least one as of 2374	VOY: "Infinite Regress"
"Reptilian aliens"	At least one as of 2374
Reptohumanoids	At least one as of 2374
Romulans	At least twenty eight as of the 2380s	VOY: "Unity", "Infinite Regress"; PIC: "The End is the Beginning"
Sakari	Many from a Sakari colony as of 2373	VOY: "Blood Fever"
Sikarians	At least two as of the 2380s	PIC: "The Impossible Box"
"Tailheads"	At least one as of 2374	VOY: "Infinite Regress"
Talaxians	At least thirty nine as of 2374	VOY: "The Raven"
Tarkaleans	At least twenty-two as of 2153	ENT: "Regeneration"
Terrelians	At least one as of 2374	VOY: "Infinite Regress"
Varn's species	At least one as of 2377	VOY: "Unimatrix Zero"
Vidiians	At least one as of 2374	VOY: "Infinite Regress"
Voth	At least one as of 2374
Vulcans	At least one as of 2374
Wysanti	At least two as of 2376	VOY: "Collective"

By designation

Name	Number assimilated	Source
Species 116	Majority of their homeworld's population in 2374	VOY: "Hope and Fear"
Species 125	At least three as of 2375	VOY: "Dark Frontier"
Species 149	At least one as of 2374	VOY: "Mortal Coil"
Species 259	At least one as of 2374	VOY: "The Gift"
Species 262	Entire population in the late-22nd century	VOY: "The Omega Directive"
Species 263	Entire population prior to 2374	VOY: "The Omega Directive"
Species 312	At least one as of 2374	VOY: "Natural Law"
Species 571	At least two as of 2368	VOY: "Survival Instinct"
Species 6339	Over eleven billion as of 2375	VOY: "Infinite Regress"
Species 10026	392,000 (all but four survivors) on their homeworld in 2375	VOY: "Dark Frontier"

Borg species

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