Trochocyathus is een geslacht van neteldieren uit de klasse van de Anthozoa (bloemdieren).
Soorten Trochocyathus (Aplocyathus) brevispina Cairns & Zibrowius, 1997 Trochocyathus (Aplocyathus) hastatus Bourne, 1903 Trochocyathus (Aplocyathus) longispina Cairns & Zibrowius, 1997 Trochocyathus (Trochocyathus) aithoseptatus Cairns, 1984 Trochocyathus (Trochocyathus) apertus Cairns & Zibrowius, 1997 Trochocyathus (Trochocyathus) burchae (Cairns, 1984) Trochocyathus (Trochocyathus) caryophylloides Alcock, 1902 Trochocyathus (Trochocyathus) cepulla Cairns, 1995 Trochocyathus (Trochocyathus) cooperi (Gardiner, 1905) Trochocyathus (Trochocyathus) decamera Cairns, 1994 Trochocyathus (Trochocyathus) discus Cairns & Zibrowius, 1997 Trochocyathus (Trochocyathus) efateensis Cairns, 1999 Trochocyathus (Trochocyathus) fasciatus Cairns, 1979 Trochocyathus (Trochocyathus) fossulus Cairns, 1979 Trochocyathus (Trochocyathus) gardineri (Vaughan, 1907) Trochocyathus (Trochocyathus) gordoni Cairns, 1995 Trochocyathus (Trochocyathus) japonicus Eguchi, 1968 Trochocyathus (Trochocyathus) laboreli Cairns, 2000 Trochocyathus (Trochocyathus) maculatus Cairns, 1995 Trochocyathus (Trochocyathus) mauiensis (Vaughan, 1907) Trochocyathus (Trochocyathus) oahensis Vaughan, 1907 Trochocyathus (Trochocyathus) patelliformis Cairns, 1999 Trochocyathus (Trochocyathus) philippinensis Semper, 1872 Trochocyathus (Trochocyathus) porphyreus (Alcock, 1893) Trochocyathus (Trochocyathus) rawsonii Pourtalès, 1874 Trochocyathus (Trochocyathus) rhombocolumna Alcock, 1902 Trochocyathus (Trochocyathus) semperi Cairns & Zibrowius, 1997 Trochocyathus (Trochocyathus) spinosocostatus Zibrowius, 1980 Trochocyathus (Trochocyathus) vasiformis Bourne, 1903 Trochocyathus (Trochocyathus) wellsi Cairns, 2004
Uitgestorven soorten Trochocyathus abnormalis Duncan, 1864 † Trochocyathus armata Michelotti, 1838 † Trochocyathus mitratus (Goldfuss, 1827) † Trochocyathus (Trochocyathus) mediterraneus Zibrowius, 1980 †