Leptolaimidae familyasına bağlı cinsler (2023):
- Acontiolaimus - Filipjev, 1918
- Alaimella - Cobb, 1920
- Anguilloides
- Anguinoides - Chitwood, 1936
- Anomonema - Hopper, 1963
- Anonchus - Cobb, 1913
- Anthonema - Cobb, 1905
- Antomicron - Cobb, 1920
- Aphanolaimus - De Man, 1880
- Aplectus - Cobb, 1914
- Assia - Gerlach, 1957
- Bathyonchus - Kreis, 1936
- Camacolaimoides - De Coninck and Stekhoven, 1933
- Camacolaimus - De Man, 1889
- Chronogaster - Cobb, 1913
- Cricolaimus - Southern, 1914
- Cynura
- Dagda - Southern, 1914
- Deontolaimus - De Man, 1880
- Diodontolaimus - Southern, 1914
- Donsinemella - Allgen, 1949
- Halaphanolaimus
- Ionema
- Kreisonema - Khera, 1969
- Leptolaimoides - Vitiello, 1971
- Leptolaimus - De Man, 1876
- Necolaimus - Allgen, 1959
- Nemella - Cobb, 1920
- Neurella - Cobb, 1920
- Onchium - Cobb, 1920
- Paradoxolaimus - Kreis, 1924
- Paraphanolaimus - Nicoletzky, 1923
- Paraplectonema - Strand, 1934
- Plectolaimus - Inglis, 1966
- Procamacolaimus - Gerlach, 1954
- Rhadinema - Cobb, 1920
- Stephanolaimus - Ditlevsen, 1918