• Abyssaster diadematus (Sladen, 1883)
• Abyssaster planus (Sladen, 1883)
• Abyssaster tara (Wood-Mason & Alcock, 1891)
• Abyssura brevibrachia Belyaev & Litvinova, 1976
• Acalia erythraea Gray, 1840 accepted as Linckia (Acalia) erythraea Gray, 1840
• Acalia intermedia Gray, 1840 accepted as Linckia (Acalia) intermedia Gray, 1840
• Acalia pulchella Gray, 1840 accepted as Linckia (Acalia) pulchella Gray, 1840
• Acantharchaster aciculosus Fisher, 1910 accepted as Nearchaster (Nearchaster) aciculosus (Fisher, 1910)
• Acantharchaster dawsoni (Verrill, 1880) accepted as Cheiraster (Luidiaster) dawsoni (Verrill, 1880)
• Acantharchaster intermedius Fisher, 1910 accepted as Myonotus intermedius (Fisher, 1910)
• Acantharchaster pedicellaris Fisher, 1910 accepted as Nearchaster (Nearchaster) pedicellaris (Fisher, 1910)
• Acantharchaster variabilis Fisher, 1910 accepted as Nearchaster (Nearchaster) variabilis (Fisher, 1910)
• Acantharchaster variabilis pedicellaris Fisher, 1910 accepted as Acantharchaster pedicellaris Fisher, 1910 accepted as Nearchaster (Nearchaster) pedicellaris (Fisher, 1910)
• Acanthaster benziei Wörheide, Kaltenbacher, Cowan & Haszprunar, 2022
• Acanthaster brevispinus Fisher, 1917
• Acanthaster brevispinus brevispinus Fisher, 1917
• Acanthaster brevispinus seychellensis Jangoux & Aziz, 1984
• Acanthaster echinites (Ellis & Solander, 1786) accepted as Acanthaster planci (Linnaeus, 1758)
• Acanthaster echinus Gervais, 1841 accepted as Acanthaster planci (Linnaeus, 1758)
• Acanthaster ellisi (Gray, 1840) accepted as Acanthaster planci (Linnaeus, 1758)
• Acanthaster ellisi pseudoplanci Caso, 1962 accepted as Acanthaster pseudoplanci Caso, 1962 accepted as Acanthaster planci (Linnaeus, 1758)
• Acanthaster mauritiensis de Loriol, 1885
• Acanthaster planci (Linnaeus, 1758)
• Acanthaster pseudoplanci Caso, 1962 accepted as Acanthaster planci (Linnaeus, 1758)
• Acanthaster solaris (Schreber, 1793) accepted as Acanthaster planci (Linnaeus, 1758)
• Acheronaster tumidus H.E.S. Clark, 1982
• Acodontaster abbreviatus Koehler, 1923 accepted as Acodontaster conspicuus (Koehler, 1920)
• Acodontaster capitatus (Koehler, 1912)
• Acodontaster ceramoideus Fisher, 1940 accepted as Acodontaster elongatus (Sladen, 1889)
• Acodontaster conspicuus (Koehler, 1920)
• Acodontaster cremeus (Ludwig, 1903) accepted as Acodontaster elongatus (Sladen, 1889)
• Acodontaster elongatus (Sladen, 1889)
• Acodontaster elongatus elongatus (Sladen, 1889)
• Acodontaster elongatus f. capitatus (Koehler, 1912) accepted as Acodontaster capitatus (Koehler, 1912)
• Acodontaster elongatus f. ceramoideus Fisher, 1940 accepted as Acodontaster ceramoideus Fisher, 1940 accepted as Acodontaster elongatus (Sladen, 1889)
• Acodontaster elongatus granuliferus (Koehler, 1912)
• Acodontaster elongatus var. abbreviatus Koehler, 1923 accepted as Acodontaster abbreviatus Koehler, 1923 accepted as Acodontaster conspicuus (Koehler, 1920)
• Acodontaster granuliferus Koehler, 1912 accepted as Acodontaster elongatus granuliferus (Koehler, 1912)
• Acodontaster hodgsoni (Bell, 1908)
• Acodontaster hodgsoni f. hodgsoni (Bell, 1889)
• Acodontaster hodgsoni f. stellatus (Koehler, 1920)
• Acodontaster marginatus (Koehler, 1912)
• Acodontaster miliaris (Gray, 1847) accepted as Diplodontias miliaris (Gray, 1847)
• Acodontaster waitei (Koehler, 1920) accepted as Acodontaster conspicuus (Koehler, 1920)
• Acontiaster bandanus Döderlein, 1921
• Acrocnida brachiata (Montagu, 1804)
• Acrocnida brachiata suecica Gislén, 1926 accepted as Acrocnida brachiata (Montagu, 1804)
• Acrocnida fuscoalba (Brock, 1888)
• Acrocnida neapolitana (M. Sars, 1857) accepted as Acrocnida brachiata (Montagu, 1804)
• Acrocnida semisquamata (Koehler, 1914)
• Acrocnida spatulispina Stöhr & Muths, 2010
• Acroura agassizi von Münster, 1839 † accepted as Aplocoma agassizi (von Münster, 1839) †
• Acroura armata Picard, 1886 † accepted as Arenorbis squamosus (Picard, 1858) †
• Acroura brodiei Wright, 1866 † accepted as Sinosura brodiei (Wright, 1866) †
• Acroura cornueliana d'Orbigny, 1850 † (unaccepted > nomen nudum)
• Acroura cottaldina d'Orbigny, 1850 † (unaccepted > nomen nudum)
• Acroura granulata Benecke, 1868 † accepted as Aplocoma granulata (Benecke, 1868) †
• Acroura pellioperta Picard, 1889 † accepted as Arenorbis squamosus (Picard, 1858) †
• Acroura prisca (Goldfuss, 1833) † (uncertain > nomen dubium)
• Acroura squamosa (Picard, 1858) † accepted as Arenorbis squamosus (Picard, 1858) †
• Acroura subnuda d'Orbigny, 1850 † (unaccepted > nomen nudum)
• Actinozonella texturata (Lyman, 1883)
• Adelasterias papillosa (Koehler, 1906)
• Advenaster inermis Hess, 1955 †
• Afraster scalariformis Blake, Breton & Gofas, 1996 †
• Agalmaster grandis Schondorf, 1909
• Aganaster cingulatus Easton, 1943 †
• Aganaster fujianensis Liao & Wang, 2002 †
• Aganaster gregarius (Meek & Worten, 1869) †
• Aganaster huaanensis (Wu, 1980) †
• Aganaster jagiellonicus Thuy, Kutscher & Plachno, 2014 †
• Aganaster qingchangensis (Feng, 1985) †
• Ahuastra gfoei (Mah, 2022)
• Ahuastra kupanaha Mah, 2024
• Ailsastra achituvi O'Loughlin & Rowe, 2005
• Ailsastra amezianeae O'Loughlin & Rowe, 2005
• Ailsastra booneni O'Loughlin & Rowe, 2005
• Ailsastra eleaumei O'Loughlin & Rowe, 2005
• Ailsastra heteractis (H.L. Clark, 1938)
• Ailsastra paulayi O'Loughlin & Rowe, 2005
• Akelbaster novaecaledoniae Mah, 2007
• Albatrossaster nudus Ludwig, 1907 (uncertain > nomen dubium)
• Albatrossaster richardi Koehler, 1909 accepted as Porcellanaster ceruleus Wyville Thomson, 1878
• Albatrossaster semimarginalis Ludwig, 1905 accepted as Caulaster semimarginalis (Ludwig, 1905)
• Albatrossia nuda Ludwig, 1907 accepted as Caulaster semimarginalis (Ludwig, 1905)
• Albatrossia semimarginalis Ludwig, 1905 accepted as Caulaster semimarginalis (Ludwig, 1905)
• Aldebarania arenitea Blake & Sturgeon, 1995 †
• Aldebarania taberna Blake & Jagt, 2005 †
• Aleutiaster schefferi A.H. Clark, 1939
• Aleutihenricia beringiana (Djakonov, 1950)
• Aleutihenricia derjungini (Djakonov, 1950)
• Aleutihenricia federi Clark & Jewett, 2010
• Aleutihenricia reticulata (Hayashi, 1940)
• Alexandraster inflatus Fisher, 1906 accepted as Poraniopsis inflata (Fisher, 1906)
• Alkaidia megaungula Ewin & Gale, 2020 †
• Alkaidia sumralli Blake & Reid, 1998 †
• Allasterias anomala Verrill, 1909 accepted as Asterias rathbuni (Verrill, 1909)
• Allasterias forficulosa Verrill, 1914 accepted as Asterias rollestoni Bell, 1881
• Allasterias migrata Sladen, 1879 accepted as Asterias amurensis Lutken, 1871
• Allasterias nortonensis Verrill, 1909 accepted as Asterias rathbuni (Verrill, 1909)