Single-sexed species

All-female species

• The Rix (all-female cyborgs in The Risen Empire by Scott Westerfeld)
• all-female species in Violent Stars by Phyllis Gotlieb
• The Sharers on Shora in A Door Into Ocean by Joan M. Slonczewski (all-female species of bioengineered humans)
• Lamia in Final Fantasy (FF XI)
• Gria in Final Fantasy (FF Tactics A 2)
• Gerudo in Legend of Zelda (warrior-thieves primarily all-female)

All-male species

• Sontarans in Doctor Who
• Galka in Final Fantasy (FF XI)

Other single-sexed species

• J'Naii in Star Trek: The Next Generation
• Jem Hadar in Star Trek: Deep Space Nine
• the Draks in Enemy Mine (book and film)
• Mithras in Final Fantasy (FF XI)
• Asari in Mass Effect

See also

• One Gender Race @ TV tropes