Oncholaimidae Filipjev, 1916
Oncholaimium fucum Smolyanko & Belogurov, 1991
Oncholaimium olium
Oncholaimium paracampylocercoides Smolyanko & Belogurov, 1991
Oncholaimium paraolium
Oncholaimium ramosum
Oncholaimus abyssorum (Allgén, 1933)
Oncholaimus acuticauda
Oncholaimus aegypticus Steiner, 1921
Oncholaimus albidus
Oncholaimus antarcticus (Von Linstow, 1896)
Oncholaimus apostematus Wieser, 1959
Oncholaimus appendiculatum
Oncholaimus appendiculatus (Cobb, 1930)
Oncholaimus aquaedulcis W. Schneider, 1937
Oncholaimus attenuatus Dujardin, 1845
Oncholaimus bajulus Paramonov, 1937
Oncholaimus balli
Oncholaimus barbatus
Oncholaimus bollonsi Ditlevsen, 1930
Oncholaimus brachycercus de Man, 1889
Oncholaimus brachycerus de Man, 1889
Oncholaimus brachyuris
Oncholaimus brevicaudatus Filipjev, 1918
Oncholaimus brevicaudiculatus Rachor, 1970
Oncholaimus brevisetosus Kreis, 1932
Oncholaimus brevispiculum
Oncholaimus campbelli Allgen, 1929
Oncholaimus campylocercoides De Coninck & Stekhoven, 1933
Oncholaimus carlbergi Allgén, 1947
Oncholaimus cavatus
Oncholaimus ceterus
Oncholaimus chiltoni Ditlevsen, 1930
Oncholaimus circulus
Oncholaimus cobbi (Kreis, 1935)
Oncholaimus conicauda Filipjev, 1929
Oncholaimus conicaudatus Allgén, 1928
Oncholaimus coomansi Huang & Zhang, 2006
Oncholaimus curvicauda Allgen, 1957
Oncholaimus cylindricaudatus Allgén, 1932
Oncholaimus diversidens
Oncholaimus domesticum
Oncholaimus domesticus (Chitwood & Chitwwod, 1938)
Oncholaimus donsi (Allgén, 1947)
Oncholaimus dujardini de Man, 1876
Oncholaimus dujardinii De Man, 1876
Oncholaimus dujardinioides Chitwood, 1960
Oncholaimus echini
Oncholaimus elegans
Oncholaimus eximius
Oncholaimus flagellatus
Oncholaimus flexus
Oncholaimus gasoeensis
Oncholaimus gladius
Oncholaimus groenlandicus Ditlevsen, 1926
Oncholaimus incurvatus Ditlevsen, 1930
Oncholaimus keiensis
Oncholaimus lanceolatus Vitiello, 1970
Oncholaimus leptos Mawson, 1958
Oncholaimus longicaudatus
Oncholaimus longicavatus
Oncholaimus longispiculosus
Oncholaimus longissimus
Oncholaimus longus
Oncholaimus malgassus
Oncholaimus manilius
Oncholaimus marinus Schulz, 1932
Oncholaimus martini Wieser, 1959
Oncholaimus medius Kreis, 1928
Oncholaimus menzeli
Oncholaimus microdon Ditlevsen, 1930
Oncholaimus moanae Leduc, 2008
Oncholaimus multisetosus Huang & Zhang, 2006
Oncholaimus nigrocephalatus Cobb, 1930
Oncholaimus notolangrunensis Allgen, 1959
Oncholaimus notoviridis
Oncholaimus notoxyuris Allgen, 1959
Oncholaimus onchouris Ditlevsen, 1928
Oncholaimus opisthonchus Filipjev, 1927
Oncholaimus oxyuris Ditlevsen, 1911
Oncholaimus parachiltoni
Oncholaimus paradujardini
Oncholaimus paraegypticus Mawson, 1956
Oncholaimus paralangrunensis (Allgen, 1947)
Oncholaimus paraolium
Oncholaimus paredron (Mawson, 1958)
Oncholaimus paroxyuris Schuurmans Stekhoven, 1942
Oncholaimus plavmornini Filipjev, 1927
Oncholaimus priapulus Wieser, 1959
Oncholaimus problematicus
Oncholaimus qingdaoensis
Oncholaimus rapax Kreis, 1932
Oncholaimus rhopalocercus
Oncholaimus roervikensis
Oncholaimus rotundicaudatus
Oncholaimus sahariensis Coomans & Heyns, 1983
Oncholaimus salobrus Pastor de Ward, 1993
Oncholaimus scanicus (Allgén, 1935)
Oncholaimus septentrionalis Filipjev, 1927
Oncholaimus serpens
Oncholaimus serratus Allgén, 1935
Oncholaimus sheri
Oncholaimus sinensis
Oncholaimus skawensis Ditlevsen, 1921
Oncholaimus spiralis
Oncholaimus spissus Allgen, 1935
Oncholaimus steinboecki Ditlevsen, 1928
Oncholaimus steineri Ditlevsen, 1928
Oncholaimus tenuicaudatus Allgén, 1932
Oncholaimus thysanouraios (Mawson, 1958)
Oncholaimus tobagoensis Allgen, 1947
Oncholaimus ushakovi Filipjev, 1927
Oncholaimus vanderlandi
Oncholaimus vesicarium
Oncholaimus vesicarius (Wieser, 1959)
Oncholaimus viridis Bastian, 1865