• Ricinus accepted as Ixodes Latreille, 1795 [Family: Ixodidae]
• Ricinus de Geer, 1778 [Family: Ricinidae]
• Ricinus Linnaeus, 1753 [Family: Euphorbiaceae]
• Ricinus accentor Eichler, 1953 accepted as Ricinus fringillae De Geer, 1778
• Ricinus africanus Mill. accepted as Ricinus communis Linnaeus
• Ricinus alphaaurigae Eichler, 1956
• Ricinus americanus Mill. accepted as Jatropha curcas Linnaeus
• Ricinus angulatus Thunb. accepted as Ricinus communis Linnaeus
• Ricinus apelta Lour. accepted as Mallotus apelta (Lour.) Müll. Arg.
• Ricinus arcuatus (Kellogg & Mann, 1912)
• Ricinus armatus Andr. accepted as Ricinus communis Linnaeus
• Ricinus atropurpureus Pax & K. Hoffm. accepted as Ricinus communis Linnaeus
• Ricinus aureolae Mey, 1982 accepted as Ricinus fringillae De Geer, 1778
• Ricinus australis (Kellogg, 1896)
• Ricinus badius Rchb. accepted as Ricinus communis Linnaeus
• Ricinus balati Rheinwald, 1968
• Ricinus borboniensis Pax & K. Hoffm. accepted as Ricinus communis Linnaeus
• Ricinus borin Balát, 1952
• Ricinus brelihi Rheinwald, 1968
• Ricinus brevicapitis Carriker, 1964
• Ricinus butleri Oniki, 2000
• Ricinus calcarii Nelson, 1972
• Ricinus cambodgensis Benary accepted as Ricinus communis Linnaeus
• Ricinus caninis Valmont de Bomare, 1791 accepted as Ixodes ricinus Linnaeus, 1758
• Ricinus caninus Ray, 1710 accepted as Ixodes ricinus Linnaeus, 1758
• Ricinus canis De Geer, 1778 accepted as Trichodectes canis (De Geer, 1778)
• Ricinus capensis Sasvan-Schafer, 1966 accepted as Ricinus diffusus (Kellogg, 1896)
• Ricinus carolynae Nelson, 1972
• Ricinus cherriei (Durrant, 1906)
• Ricinus chinensis Thunb. accepted as Mallotus paniculatus (Lam.) Müll. Arg.
• Ricinus clayae Rheinwald, 1968
• Ricinus communis Linnaeus
• Ricinus compactus Huber accepted as Ricinus communis Linnaeus
• Ricinus complicatus Carriker, 1964
• Ricinus cornicis De Geer, 1778 accepted as Myrsidea cornicis (De Geer, 1778)
• Ricinus dalgleishi Nelson, 1972
• Ricinus dendroicae Nelson, 1972
• Ricinus dicoccus Roxb.
• Ricinus diffusus (Kellogg, 1896)
• Ricinus digitatus Noronha accepted as Ricinus communis Linnaeus
• Ricinus dioicus Chev. ex Steud. accepted as Cordemoya integrifolia (Willd.) Baill.
• Ricinus dioicus G. Forst. accepted as Macaranga dioica (G. Forst.) Müll. Arg.
• Ricinus dioicus Wall. ex Roxb. accepted as Melanolepis multiglandulosa (Reinw. ex Blume) Rchb. & Zoll.
• Ricinus dolichocephalus (Scopoli, 1763)
• Ricinus elongatus (Olfers, 1816)
• Ricinus emberizae De Geer, 1778 accepted as Philopterus citrinellae (Schrank, 1776)
• Ricinus emersoni Nelson, 1972
• Ricinus ernstlangi Eichler, 1941 accepted as Ricinus elongatus (Olfers, 1816)
• Ricinus europaeus T. Nees accepted as Ricinus communis Linnaeus
• Ricinus expeditions Eichler, 1954 accepted as Ricinus invadens (Kellogg, 1899)
• Ricinus exsul Carriker, 1964 accepted as Ricinus subangulatus (Carriker, 1903)
• Ricinus facetus Mey, 2007
• Ricinus fasciatus (Piaget, 1885)
• Ricinus flammeae Mey, 1982 accepted as Ricinus fringillae De Geer, 1778
• Ricinus flavicans Carriker, 1964
• Ricinus flavirostris Mey, 1982 accepted as Ricinus fringillae De Geer, 1778
• Ricinus floribundus Reinw. ex Müll. Arg. accepted as Mallotus floribundus (Blume) Müll. Arg.
• Ricinus frenatus (Burmeister, 1838)
• Ricinus fringillae De Geer, 1778
• Ricinus furfuraceus Wall. (unaccepted > nomen nudum)
• Ricinus gallinae De Geer, 1778 accepted as Goniocotes gallinae (De Geer, 1778)
• Ricinus gibbus Rheinwald, 1968
• Ricinus gibsonii auct. accepted as Ricinus communis Linnaeus
• Ricinus giganteus Pax & K. Hoffm. accepted as Ricinus communis Linnaeus
• Ricinus glaucus Hoffmanns. accepted as Ricinus communis Linnaeus
• Ricinus globosus (Sw.) Willd. accepted as Chaetocarpus globosus (Sw.) Fawc. & Rendle
• Ricinus guianensis Carriker, 1964 accepted as Ricinus polioptilus Carriker, 1964
• Ricinus gutheili Mey, 2007
• Ricinus houbarae Barthelemy, 1836 accepted as Otidoecus houbarae (Barthelemy, 1836)
• Ricinus hybridus Besser accepted as Ricinus communis Linnaeus
• Ricinus inermis Mill. accepted as Ricinus communis Linnaeus
• Ricinus inexpectatus Balát, 1966 accepted as Ricinus fringillae De Geer, 1778
• Ricinus integrifolius Willd. accepted as Cordemoya integrifolia (Willd.) Baill.
• Ricinus invadens (Kellogg, 1899)
• Ricinus ivanovi Blagoveshtchensky, 1951
• Ricinus japonicus Thunb. accepted as Ricinus communis Linnaeus
• Ricinus jarak Thunb. accepted as Jatropha curcas Linnaeus
• Ricinus krappa Steud. accepted as Ricinus communis Linnaeus
• Ricinus lacertarum Contarini, 1847 accepted as Ixodes ricinus Linnaeus, 1758
• Ricinus laevis DC. accepted as Ricinus communis Linnaeus
• Ricinus lanceolatus Carriker, 1964 accepted as Ricinus pessimalis Eichler, 1956 [Family: Ricinidae]
• Ricinus lanceolatus Thouars ex Baill. accepted as Cordemoya integrifolia (Willd.) Baill. [Family: Euphorbiaceae]
• Ricinus lari De Geer, 1778 accepted as Trinoton querquedulae (Linnaeus, 1758)
• Ricinus leptosomus (Carriker, 1903)
• Ricinus leucocarpus Bertol. accepted as Ricinus communis Linnaeus
• Ricinus lividus Jacq. accepted as Ricinus communis Linnaeus
• Ricinus machaeropterus Carriker, 1964 accepted as Ricinus invadens (Kellogg, 1899)
• Ricinus macrocarpus Popova accepted as Ricinus communis Linnaeus
• Ricinus macrocarpus Steud. accepted as Ricinus communis Linnaeus
• Ricinus macronyx Tendeiro, 1994 accepted as Ricinus meinertzhageni Rheinwald, 1968
• Ricinus macrophyllus Bertol. accepted as Ricinus communis Linnaeus
• Ricinus maculatus (Piaget, 1885)
• Ricinus magnus Uchida, 1926 accepted as Ricinus serratus (Durrant, 1906)
• Ricinus major Fresca, 1924
• Ricinus manacus Carriker, 1964 accepted as Ricinus pessimalis Eichler, 1956
• Ricinus mandibulatus Nelson, 1972
• Ricinus mappa Linnaeus accepted as Macaranga mappa (L.) Müll. Arg.
• Ricinus marginatus (Children, 1836)
• Ricinus medicus Forssk. accepted as Ricinus communis Linnaeus
• Ricinus medius J.F. Gmel. accepted as Ricinus communis Linnaeus