Oithonidae Dana, 1852
Oithona abbreviata Dana, 1852
Oithona aculeata Farran, 1913
Oithona alia (Kiefer, 1935)
Oithona alvarezi Lindberg, 1955
Oithona amazonica Burckhardt, 1913
Oithona aruensis Früchtl, 1923
Oithona atlantica Farran, 1908
Oithona attenuata Farran, 1913
Oithona australis Nishida, 1986
Oithona bjornbergae Ferrari F.D. & Bowman, 1980
Oithona bowmani Rocha C.E.F., 1985
Oithona brevicornis Giesbrecht, 1891
Oithona canhanhae Oliveira, 1945
Oithona challengeri Brady, 1883
Oithona colcarva Bowman, 1975
Oithona cruralis Nishida, Tanaka & Omori, 1977
Oithona davisae Ferrari & Orsi, 1984
Oithona decipiens Farran, 1913
Oithona dissimilis Lindberg, 1940
Oithona erythrops Brady, 1915
Oithona fallax Farran, 1913
Oithona farrani (Brady, 1915)
Oithona fonsecae Ferrari F.D. & Bowman, 1980
Oithona fragilis Nishida, 1979
Oithona frigida Giesbrecht, 1902
Oithona gessneri Kiefer, 1954
Oithona hamata Rosendorn
Oithona hebes Giesbrecht, 1891
Oithona helgolandica Claus, 1863
Oithona horai Sewell, 1934
Oithona linearis Giesbrecht, 1891
Oithona longispina Nishida, Tanaka & Omori, 1977
Oithona minuta Krichagin, 1877
Oithona nana Giesbrecht, 1892
Oithona neotropica Herbst, 1967
Oithona nishidai McKinnon, 2000
Oithona oculata Farran, 1913
Oithona oligohalina Fonseca & Björnberg T.K.S., 1976
Oithona oraemaris Oliveira, 1946
Oithona oswaldocruzi Oliveira, 1945
Oithona ovalis Herbst, 1955
Oithona ovata Lindberg, 1950
Oithona pelagica Farran, 1908
Oithona plumifera Baird, 1843
Oithona plumosa Lindberg, 1947
Oithona plymifera Baird, 1843
Oithona pseudofrigida Rosendorn, 1917
Oithona pseudovivida Shuvalov, 1980
Oithona pygmaea Boeck, 1865
Oithona rigida Giesbrecht, 1896
Oithona robertsoni McKinnon, 2000
Oithona robusta Giesbrecht, 1891
Oithona rostralis Nishida, Tanaka & Omori, 1977
Oithona sapucaiae Oliveira, 1945
Oithona scriba (Dana, 1849)
Oithona setigera Dana, 1852
Oithona similis Claus, 1866
Oithona simplex Farran, 1913
Oithona sinensis Burckhardt, 1912
Oithona spinifrons Boeck, 1865
Oithona spinirostris Claus, 1863
Oithona spinulosa Lindberg, 1974
Oithona splendens Baird, 1843
Oithona tenuis Rosendorn, 1917
Oithona tropica Wolfenden, 1906
Oithona vivida Farran, 1913
Oithona wellershausi Ferrari F.D., 1982