Megascolecidae zijn een familie van ringwormen uit de orde van de Crassiclitellata.

Geslachten 
 Aceeca Blakemore, 2000
 Amphimiximus Blakemore, 2000
 Amynthas Kinberg, 1866
 Anisochaeta Beddard, 1890
 Anisogaster Blakemore, 2000
 Aporodrilus Blakemore, 2000
 Archipheretima Michaelsen, 1928
 Austrohoplochaetella Jamieson, 1971
 Balanta Michaelsen, 1898
 Begemius Easton, 1982
 Borgesia James, 1991
 Caecadrilus Blakemore, 2000
 Chetcodrilus Fender & McKey-Fender, 1990
 Chilota Michaelsen, 1899
 Comarodrilus Stephenson, 1915
 Cryptodrilus Fletcher, 1886
 Deodrilus Beddard, 1890
 Didymogaster Fletcher, 1886
 Digaster Perrier, 1872
 Diporochaeta Beddard, 1890
 Eastoniella Jamieson, 1977
 Exxus Gates, 1959
 Fletcherodrilus Michaelsen, 1891
 Gastrodrilus Blakemore, 2000
 Gemascolex Edmonds & Jamieson, 1973
 Graliophilus Jamieson, 1971
 Hegesipyle Kinberg, 1867
 Heteroporodrilus Jamieson, 1970
 Hiatidrilus Jamieson, 1994
 Hickmaniella Jamieson, 1974
 Kanchuria Julka, 1988
 Kaxdrilus Fragoso & Rojas, 1994
 Lampito Kinberg, 1867
 Larsonidrilus James, 1993
 Mahbenus Bourne, 1894
 Mayadrilus Fragoso & Rojas, 1994
 Megascolex Templeton, 1844
 Megascolides McCoy, 1878
 Metapheretima Michaelsen, 1928
 Metaphire Sims & Easton, 1972
 Nelloscolex Gates, 1939
 Nexogaster Blakemore & Kingston, 1997
 Nitocris Kinberg, 1867
 Notoscolex Fletcher, 1886
 Oreoscolex Jamieson, 1973
 Parapheretima Cognetti de Martiis, 1912
 Paraplutellus Jamieson, 1972
 Perichaeta Schmarda, 1861
 Pericryptodrilus Jamieson, 1977
 Perionychella Michaelsen, 1907
 Perionyx Perrier, 1872
 Perissogaster Fletcher, 1887
 Pheretima Kinberg, 1866
 Pithemera Sims & Easton, 1972
 Planapheretima Michaelsen, 1934
 Pleionogaster Michaelsen, 1892
 Pleurochaeta Beddard, 1883
 Plionogaster Michaelsen, 1900
 Polypheretima Michaelsen, 1934
 Pontodrilus Perrier, 1874
 Propheretima Jamieson, 1995
 Protozapotecia James, 1993
 Provescus Blakemore, 2000
 Pseudocryptodrilus Jamieson, 1972
 Pseudonotoscolex Jamieson, 1971
 Retrovescus Blakemore, 1998
 Sebastianus Blakemore, 1997
 Simsia Jamieson, 1972
 Spenceriella Michaelsen, 1907
 Tassiedrilus Blakemore, 2000
 Terrisswalkerius Jamieson, 1994
 Tokea Benham, 1904
 Tonoscolex Gates, 1933
 Trichaeta Spencer, 1900
 Trinephrus Beddard, 1895
 Troyia Jamieson, 1977
 Vesiculodrilus Jamieson, 1973
 Woodwardiella Stephenson, 1925
 Zacharius Blakemore, 1997
 Zapatadrilus James, 1991

Synoniemen 
 Amyntas => Amynthas Kinberg, 1866
 Rhodopis Kinberg, 1866 => Metaphire Sims & Easton, 1972
 Woodwardia Michaelsen, 1907 => Woodwardiella Stephenson, 1925