• Hemiaster Desor in Agassiz & Desor, 1847 †
• Hemiaster (Bolbaster) Pomel, 1869 † accepted as Bolbaster Pomel, 1869 †
• Hemiaster (Bolbaster) callidus McNamara, 1987b †
• Hemiaster (Bolbaster) dolosus McNamara, 1987b †
• Hemiaster (Bolbaster) hattaensis Ali, 1989a †
• Hemiaster (Bolbaster) subidus McNamara, 1987b †
• Hemiaster (Bolbaster) verecundus McNamara, 1987b †
• Hemiaster (Holanthus) Lambert & Thiéry, 1924 accepted as Holanthus Lambert & Thiéry, 1924
• Hemiaster (Holanthus) hickmani Koehler, 1914 accepted as Holanthus hickmani (Koehler, 1914)
• Hemiaster (Integraster) Lambert & Thiéry, 1924 accepted as Holanthus Lambert & Thiéry, 1924
• Hemiaster (Integraster) clarki Lambert & Thiéry, 1924 accepted as Holanthus clarki (Lambert & Thiéry, 1924)
• Hemiaster (Integraster) expergitus Lovén, 1871 accepted as Holanthus expergitus (Lovén, 1871)
• Hemiaster (Integraster) gibbosus A. Agassiz, 1879 accepted as Holanthus expergitus gibbosus (A. Agassiz, 1879)
• Hemiaster (Integraster) vanus Koehler, 1914 accepted as Holanthus vanus (Koehler, 1914)
• Hemiaster (Integraster) zonatus A. Agassiz, 1879 accepted as Holanthus expergitus (Lovén, 1871)
• Hemiaster (Leymeriaster) Lambert & Thiéry, 1924 † accepted as Leymeriaster Lambert & Thiéry, 1924 †
• Hemiaster (Leymeriaster) eluvialis van der Ham, 1995 †
• Hemiaster (Leymeriaster) polygonalis Tanaka, 1984a †
• Hemiaster (Macraster) Roemer, 1888 † accepted as Macraster Roemer, 1888 †
• Hemiaster (Macraster) cascajalensis Cooke, 1949 †
• Hemiaster (Mecaster) Pomel, 1883 † accepted as Mecaster Pomel, 1883 †
• Hemiaster (Mecaster) chirakhanensis Chiplonker, 1939 †
• Hemiaster (Mecaster) majungensis Tanaka in Tanaka, Kanie & Obata, 1979 †
• Hemiaster (Mecaster) mikasaensis Tanaka, 1984b †
• Hemiaster (Mecaster) rarus Chiplonkar & Badve, 1972 †
• Hemiaster (Rhinobrissus) accepted as Rhynobrissus A. Agassiz, 1872
• Hemiaster (Rhinobrissus) apicatus Tenison-Woods, 1879 accepted as Rhynobrissus hemiasteroides A. Agassiz, 1879
• Hemiaster (Rhynobrissus) A. Agassiz, 1872 accepted as Rhynobrissus A. Agassiz, 1872
• Hemiaster (Rhynobrissus) apicatus Tenison-Woods, 1879 accepted as Rhynobrissus hemiasteroides A. Agassiz, 1879
• Hemiaster agassizii Pfeffer, MS accepted as Abatus agassizii Mortensen, 1910
• Hemiaster aktaschensis Egorov, 1972 † (unaccepted > nomen nudum)
• Hemiaster amelianus Cooke, 1953 †
• Hemiaster amudariensis Shmidt & Simakov, 1953 †
• Hemiaster amurensis Shmidt in Shmidt & Vereshchaghin, 1960 †
• Hemiaster anisopetalus Smith & Wright, 2008 †
• Hemiaster apicatus Tenison-Woods, 1879 accepted as Rhynobrissus hemiasteroides A. Agassiz, 1879
• Hemiaster arachnius Devriès, 1973 †
• Hemiaster archeri Tenison-Woods, 1867 † accepted as Cyclaster archeri (Tenison-Woods, 1867) †
• Hemiaster arcolensis Cooke, 1953 †
• Hemiaster arcticus Shmidt, 1976 †
• Hemiaster australis (Philippi, 1845) accepted as Abatus cavernosus (Philippi, 1845)
• Hemiaster baconicus Szörényi, 1955a †
• Hemiaster balboi Airaghi, 1939 †
• Hemiaster barthouxi Lambert, 1932 †
• Hemiaster batalleri Lambert, 1933 †
• Hemiaster bedakensis Egorov, 1972 † (unaccepted > nomen nudum)
• Hemiaster benhurensis Stephenson, 1941 †
• Hemiaster besairiei Lambert, 1933 †
• Hemiaster bowerbanki Forbes, 1852 †
• Hemiaster branderianus Forbes, 1852 †
• Hemiaster catandubensis Maury, 1934 †
• Hemiaster cavernosus (Philippi, 1845) accepted as Abatus cavernosus (Philippi, 1845)
• Hemiaster cearensis Brito, 1981b †
• Hemiaster cedroensis Maury, 1936 †
• Hemiaster clarki Lambert & Thiéry, 1924 accepted as Holanthus clarki (Lambert & Thiéry, 1924)
• Hemiaster cordatus Verrill, 1876 accepted as Abatus cordatus (Verrill, 1876)
• Hemiaster costatus Egorov, 1972 † (unaccepted > nomen nudum)
• Hemiaster cranium Cooke, 1946 †
• Hemiaster curukensis Egorov, 1972 † (unaccepted > nomen nudum)
• Hemiaster despujolsi Lambert, 1937 †
• Hemiaster digonus †
• Hemiaster digonus kohaticus Davies, 1943 †
• Hemiaster digonus var. kohaticus Davies, 1943 † accepted as Hemiaster digonus kohaticus Davies, 1943 †
• Hemiaster elegans Shumard, 1853 † accepted as Macraster elegans (Shumard, 1853) †
• Hemiaster elongatus Koehler, 1908 accepted as Abatus koehleri (Thiéry, 1909)
• Hemiaster estepi Lucas, 2000 †
• Hemiaster expergitus Lovén, 1871 accepted as Holanthus expergitus (Lovén, 1871)
• Hemiaster expergitus gibbosus A. Agassiz, 1879 accepted as Holanthus expergitus gibbosus (A. Agassiz, 1879)
• Hemiaster forbesi Gregory, 1892 †
• Hemiaster fourtaui Chiplonker, 1937 †
• Hemiaster gallegosensis de Loriol, 1904 accepted as Abatus cavernosus (Philippi, 1845)
• Hemiaster gemellaroi Checchia-Rispoli, 1936 †
• Hemiaster gibbosus A. Agassiz, 1879 accepted as Holanthus expergitus gibbosus (A. Agassiz, 1879)
• Hemiaster gissarensis Shmidt & Simakov, 1953 †
• Hemiaster globulosus Sánchez Roig, 1949 †
• Hemiaster globulus A. Agassiz & H.L. Clark, 1907 accepted as Hemiaster clarki Lambert & Thiéry, 1924 accepted as Holanthus clarki (Lambert & Thiéry, 1924)
• Hemiaster gonzalezmunozi Sánchez Roig, 1953 †
• Hemiaster hawkinsi Lambert, 1933 †
• Hemiaster heteropneustes Lambert, 1936 †
• Hemiaster hickmani Koehler, 1914 accepted as Holanthus hickmani (Koehler, 1914)
• Hemiaster himalayensis Mu & Wu, 1976 †
• Hemiaster holoambitatus Chiplonker, 1937 †
• Hemiaster hourcqi Lambert, 1936 †
• Hemiaster humphreysanus Meek & Hayden, 1858
• Hemiaster integer Lambert, 1933 †
• Hemiaster jacksoni Maury, 1925 †
• Hemiaster jacobi Besairie & Lambert, 1930 †
• Hemiaster javanicus Shmidt & Simakov, 1953 †
• Hemiaster judinkensis Shmidt in Shmidt & Vereshchaghin, 1960 †
• Hemiaster kafirniganensis Egorov, 1972 † (unaccepted > nomen nudum)
• Hemiaster koehleri Thiéry, 1909 accepted as Abatus koehleri (Thiéry, 1909)
• Hemiaster kunlunensis Yang Shengqiu, 1991 †
• Hemiaster labriei Lambert, 1936 †
• Hemiaster lamberti Sánchez Roig, 1949 †
• Hemiaster latesulcatus Lambert, 1936 †
• Hemiaster madagascariensis Cottreau, 1922 †
• Hemiaster madagascariensis nana Lambert, 1936 †
• Hemiaster madrugensis Weisbord, 1934 †
• Hemiaster mentzi A. Agassiz, 1880 accepted as Holanthus expergitus (Lovén, 1871)
• Hemiaster mentzii A. Agassiz, 1883 accepted as Holanthus expergitus (Lovén, 1871)