Posthodiplostomum

Posthodiplostomum is a genus of flatworms belonging to the family Diplostomidae.

The species of this genus are found in Europe, Australia and Northern America.

, a total of 36 species are recognized by the Global Biodiversity Information Facility:
 * Posthodiplostomum anterovarium (Dronen, 1985)
 * Posthodiplostomum australe Dubois, 1937
 * Posthodiplostomum biellipticum Dubois, 1958
 * Posthodiplostomum botauri Vidyarthi, 1938
 * Posthodiplostomum brevicaudatum (von Nordmann, 1832)
 * Posthodiplostomum centrarchi Hoffman, 1958
 * Posthodiplostomum cuticola (von Nordmann, 1832)
 * Posthodiplostomum erickgreenei Achatz, Chermak, Cromwell & Tkach, 2021
 * Posthodiplostomum eurypygae Achatz, Chermak, Bell, Fecchio & Tkach, 2021
 * Posthodiplostomum giganteum Dubois, 1988
 * Posthodiplostomum grande (Diesing, 1850)
 * Posthodiplostomum grayii (Verma, 1936)
 * Posthodiplostomum huesingi Odening, 1962
 * Posthodiplostomum ixobrychi (Lung, 1966)
 * Posthodiplostomum kinselli Achatz, Chermak, Martens, Pulis & Tkach, 2021
 * Posthodiplostomum larai (Refuerzo & Garcia, 1937)
 * Posthodiplostomum linguaeforme Pearson & Dubois, 1985
 * Posthodiplostomum macrocotyle Dubois, 1937
 * Posthodiplostomum mehtai Gupta & Mishra, 1974
 * Posthodiplostomum microsicya Dubois, 1936
 * Posthodiplostomum mignum Boero, Led & Brandetti, 1972
 * Posthodiplostomum milvi Fotedar & Bambroo, 1965
 * Posthodiplostomum minimum (MacCallum, 1921)
 * Posthodiplostomum nanum Dubois, 1937
 * Posthodiplostomum obesum (Lutz, 1928)
 * Posthodiplostomum oblongum Dubois, 1937
 * Posthodiplostomum opisthosicya Dubois, 1969
 * Posthodiplostomum orchilongum Noble, 1936
 * Posthodiplostomum pacificum Achatz, Chermak, Kent & Tkach, 2021
 * Posthodiplostomum podicipitis (Yamaguti, 1939)
 * Posthodiplostomum pricei (Krull, 1934)
 * Posthodiplostomum prosostomum Dubois & Rausch, 1948
 * Posthodiplostomum ptychocheilus (Faust, 1917)
 * Posthodiplostomum recurvirostrae Achatz, Chermak & Tkach, 2021
 * Posthodiplostomum scardinii (Shulman, 1952)
 * Posthodiplostomum skrjabini Sadychov, 1967