Acanthocyclops is a genus of copepod crustaceans in the family Cyclopidae. It was originally described by Friedrich Kiefer as a subgenus of Cyclops, and contains the following species: \n* Acanthocyclops abyssicola (Lilljeborg, 1901) \n* Acanthocyclops agamus Kiefer, 1938 \n* Acanthocyclops alticola (Kiefer, 1935) \n* Acanthocyclops americanus (Marsh, 1893) \n* Acanthocyclops arenosus Mazepova, 1950 \n* Acanthocyclops balcanicus Naidenov & Pandourski, 1992 \n* Acanthocyclops biarticulatus Monchenko, 1972 \n* Acanthocyclops bicuspidatus (Claus, 1857) \n* Acanthocyclops bisetosus (Rehberg, 1880) \n* Acanthocyclops brachypus (Kiefer, 1955) \n* Acanthocyclops brevispinosus (Herrick, 1884) \n* Acanthocyclops caesariatus Mercado-Salas & Suárez-Morales, 2009 \n* Acanthocyclops capillatus (Sars, 1863) \n* Acant