Pseudarchaster is een geslacht van kamsterren, en het typegeslacht van de familie Pseudarchasteridae.
Soorten Pseudarchaster alascensis Fisher, 1905 Pseudarchaster discus Sladen, 1889 Pseudarchaster dissonus Fisher, 1910 Pseudarchaster diversigranulatus Macan, 1938 Pseudarchaster garricki Fell, 1958 Pseudarchaster gracilis (Sladen, 1889) Pseudarchaster jordani Fisher, 1906 Pseudarchaster macdougalli McKnight, 1973 Pseudarchaster microceramus (Fisher, 1913) Pseudarchaster mozaicus Wood-Mason & Alcock, 1891 Pseudarchaster myobrachius Fisher, 1906 Pseudarchaster obtusus Hayashi, 1973 Pseudarchaster oligoporus Fisher, 1913 Pseudarchaster ornatus Djakonov, 1950 Pseudarchaster parelii (Düben & Koren, 1846) Pseudarchaster pectinifer Ludwig, 1905 Pseudarchaster pulcher Ludwig, 1905 Pseudarchaster pusillus Fisher, 1905 Pseudarchaster roseus (Alcock, 1893) Pseudarchaster tessellatus Sladen, 1889 Pseudarchaster verrilli Ludwig, 1905