• Simia accepted as Samia Hübner, 1819 [Family: Saturniidae, Phylum: Arthropoda]
• Simia Leach, 1847 (uncertain) [Family: Mollusca (awaiting allocation), Phylum: Mollusca]
• Simia Linnaeus, 1758 (unaccepted) [Family: Atelidae, Phylum: Chordata]
• Simia N.S. Mikhailova & T.V. Jankauskas in T.V. Jankauskas, 1989 † [Family: , Phylum: Acritarcha]
• Simia S. Arnell, 1962 accepted as Cylindrocolea R.M. Schuster, 1969 [Family: Cephaloziellaceae, Phylum: Marchantiophyta]
• Simia annularis (Timofeev, 1969) Mikhailova in Jankauskas et al., 1989 †
• Simia simica (Jankauskas, 1980) Jankauskas in Jankauskas et al., 1989 †
• Simiacritomys Kelly, 1992 †
• Simian adenovirus A
• Simian enterovirus A
• Simian foamy virus
• Simian hemorrhagic fever virus
• Simian immunodeficiency virus
• Simian parvovirus
• Simian sapelovirus
• Simian virus 10
• Simian virus 12
• Simian virus 40
• Simian virus 41
• Simianellus Van Emden, 1924
• Simianellus basalis van Emden, 1924
• Simianellus cerrutii Pic, 1928
• Simianellus cyaneicollis (Waterhouse, 1877)
• Simianellus globicollis van Emden, 1924
• Simianellus incisus van Emden, 1924
• Simianellus laeta Waterhouse
• Simianellus melanocephalus van Emden, 1924
• Simianellus obscurus van Emden, 1924
• Simianellus philippinensis Schaef.
• Simianellus thoracicus van Emden, 1924
• Simianides Van Emden, 1924
• Simianides bocourti Pic, 1928 accepted as Simianides laportei (Hope, 1846)
• Simianides laportei (Hope, 1846)
• Simianus Blanchard, 1853
• Simianus atrimembris Pic, 1927 accepted as Simianus brevior Pic, 1927
• Simianus bicolor Blanchard, 1853
• Simianus bicoloripes Pic, 1922
• Simianus brevior Pic, 1927
• Simianus cribripennis Fairmaire, 1893
• Simianus dichroa Lewis
• Simianus diversicornis Pic, 1925
• Simianus inapicalis Pic, 1925
• Simianus lateapicalis Pic, 1928
• Simianus lateniger Pic, 1925
• Simianus maculaticeps Pic, 1938
• Simianus mesomelaena (Fairmaire, 1877)
• Simianus niponicus Lewis, 1895
• Simianus oshimanus (Nakane, 1973)
• Simianus pascoei Waterhouse
• Simianus pasteuri Pic, 1928
• Simianus pyrochroides Pic, 1925
• Simianus reductus Pic, 1925
• Simianus rubricollis (Pic, 1916)
• Simianus terminatus Fairmaire, 1887
• Simianus variabilis van Emden
• Simias Miller, 1903