List of bioengineered species and races
- Various posthumans in Chris Moriarty's books
- Various posthumans in Liz Williams' books
- Various uplifted species by humans (chimps,dolphins, gorillas) and most alien species in David Brin's Uplift series
- Posthuman species in Octavia Butler's Xenogenesis trilogy
- The Haut, Ghem and Ba form Cetaganda in Lois McMaster Bujold's Vorkosigan series
- Quaddies in Lois McMaster Bujold's Vorkosigan series (Four armed free fall dwellers)
- the people of the planet Shora in A Door into Ocean and sequels by Joan M. Slonczewski
- many of the various humans around the Ekumen Universe by Ursula K. Le Guin; see especially the Gethenians