Aca
- Acanthocercus
- Acanthochelys
- Acanthodactylus
Acanthophis Daudin, 1803
- Acanthophis antarcticus Shaw, 1794
- Acanthophis antarcticus antarcticus (Shaw, 1794)
- Acanthophis antarcticus cliffrosswelingtoni Hoser, 2002
- Acanthophis antarcticus schistos Wells & Wellington, 1985
- Acanthophis ceramensis Günther, 1863
- Acanthophis cryptamydros novootkrivena vrsta [1]
- Acanthophis hawkei Wells & Wellington, 1985
- Acanthophis laevis Macleay, 1878
- Acanthophis praelongus Ramsay, 1877; (Adder)
- Acanthophis pyrrhus Boulenger, 1898
- Acanthophis rugosus Loveridge, 1948
- Acanthophis wellsi Hoser, 1998
- Acanthophis wellsi donnellani Hoser, 2002
- Acanthophis wellsi wellsi Hoser, 1998
Reptilia → Squamata → Serpentes → Alethinophidia → Elapidae
- Acanthosaura
Ach
- Achalinus
Aco
Acontias Cuvier, 1817
- Acontias aurantiacus (Peters, 1854)
- Acontias bicolor (Hewitt, 1929)
- Acontias breviceps Essex, 1925
- Acontias cregoi (Boulenger, 1903)
- Acontias gariepensis (Fitzsimons, 1941)
- Acontias gracilicauda Essex, 1925
- Acontias jappi (Broadley, 1968)
- Acontias kgalagadi Lamb, Biswas & Bauer, 2010
- Acontias lineatus Peters, 1879
- Acontias litoralis Broadley & Greer, 1969
- Acontias meleagris Linnaeus, 1758
- Acontias namaquensis Hewitt, 1938
- Acontias occidentalis Fitzsimons, 1941
- Acontias orientalis Hewitt, 1938
- Acontias percivali Loveridge, 1935
- Acontias plumbeus Bianconi, 1849
- Acontias poecilus Bourquin & Lambiris, 1996
- Acontias richardi (Jacobsen, 1987)
- Acontias rieppeli (Lamb, Biswas & Bauer, 2010)
- Acontias schmitzi Wagner, Broadley & Bauer, 2012
- Acontias tristis Werner, 1911
Reptilia → Squamata → Lacertilia → Scincomorpha → Scincidae
Acr
- Acrantophis
- Acratosaura
- Acrochordidae
- Acrochordus
Acu
Acutotyphlops Wallach, 1995
- Acutotyphlops banaorum Wallach, Brown, Diesmos & Gee, 2007
- Acutotyphlops infralabialis (Waite, 1918)
- Acutotyphlops kunuaensis Wallach, 1995
- Acutotyphlops solomonis (Parker, 1939)
- Acutotyphlops subocularis (Waite, 1897)