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: * (Lilljeborg, 1901) * Kiefer, 1938 * (Kiefer, 1935) * (Marsh, 1893) * Mazepova, 1950 * Naidenov & Pandourski, 1992 * Monchenko, 1972 * (Claus, 1857) * (Rehberg, 1880) * (Kiefer, 1955) * (Herrick, 1884) * Mercado-Salas & Suárez-Morales, 2009 * (Sars, 1863) * (Yeatman, 1944) * Pesce, 1978 * (Naidenov & Pandourski, 1992) * Reid, 1990 * (Sars, 1863) * (Kiefer, 1928) * (Graeter, 1910) * (Sterba, 1954) * Chislenko, 1977 * Pesce & Maggi, 1977 * Mirabdullayev & Defaye, 2004 * Lindberg, 1950 * Mazepova, 1962 * (Coker, 1934) * Lee & Chang, 2007 * Naidenov, 196