Sternostylus is een geslacht van kreeftachtigen uit de klasse van de Malacostraca (hogere kreeftachtigen).

Soorten 
 Sternostylus cavimurus (Baba, 1977)
 = Gastroptychus cavimurus Baba, 1977
 Sternostylus defensus (Benedict, 1902)
 = Chirostylus defensus (Benedict, 1902)
 = Gastroptychus defensa (Benedict, 1902)
 = Gastroptychus defensus (Benedict, 1902)
 = Ptychogaster defensa Benedict, 1902
 Sternostylus formosus (Filhol, 1884)
 = Chirostylus formosus (Filhol, 1884)
 = Gastroptychus formosus (Filhol, 1884)
 = Ptychogaster formosus Filhol, 1884
 Sternostylus hawaiiensis (Baba, 1977)
 = Gastroptychus hawaiiensis Baba, 1977
 Sternostylus hendersoni (Alcock & Anderson, 1899)
 = Chirostylus hendersoni (Alcock & Anderson, 1899)
 = Gastroptychus hendersoni (Alcock & Anderson, 1899)
 = Ptychogaster hendersoni Alcock & Anderson, 1899
 Sternostylus iaspis (Baba & Haig, 1990)
 = Gastroptychus iaspis Baba & Haig, 1990
 Sternostylus investigatoris (Alcock & Anderson, 1899)
 = Chirostylus investigatoris (Alcock & Anderson, 1899)
 = Gastroptychus investigatoris (Alcock & Anderson, 1899)
 = Ptychogaster investigatoris Alcock & Anderson, 1899
 Sternostylus meridionalis (de Melo-Filho & de Melo, 2004)
 = Gastroptychus meridionalis de Melo-Filho & de Melo, 2004
 Sternostylus milneedwardsi (Henderson, 1885)
 = Chirostylus milneedwardsi (Henderson, 1885)
 = Gastroptychus milneedwardsi (Henderson, 1885)
 = Ptychogaster milne-edwardsi Henderson, 1885
 Sternostylus perarmatus (Haig, 1968)
 = Chirostylus perarmatus Haig, 1968
 = Gastroptychus perarmatus (Haig, 1968)
 Sternostylus rogeri (Baba, 2000)
 = Gastroptychus rogeri Baba, 2000
 Sternostylus salvadori (Rice & Miller, 1991)
 = Gastroptychus salvadori Rice & Miller, 1991

Sternostylidae