• Doliolaimus agilis Lorenzen, 1966
• Metasphaerolaimus crassicauda (Freudenhammer, 1975) Gourbault & Boucher, 1981
• Metasphaerolaimus hadalis (Freudenhammer, 1975) Gourbault & Boucher, 1981
• Parasphaerolaimus dispar (Filipjev, 1918) Filipjev, 1946
• Parasphaerolaimus islandicus (Ditlevsen, 1926) Filipjev, 1946 (uncertain > taxon inquirendum)
• Parasphaerolaimus lodosus Gerlach, 1956
• Parasphaerolaimus paradoxus Ditlevsen, 1918
• Parasphaerolaimus polaris Filipjev, 1946
• Parasphaerolaimus striatus (Allgén, 1935) Cavalcanti & Venekey, 2017 (uncertain > taxon inquirendum)
• Sphaerolaimus abyssorum Allgén, 1933 (uncertain > taxon inquirendum)
• Sphaerolaimus balticus Schneider, 1906
• Sphaerolaimus brevicollis Ssaweljev, 1912 (uncertain > taxon inquirendum)
• Sphaerolaimus cuneatus Paramonov, 1929
• Sphaerolaimus dispar Filipjev, 1918 accepted as Parasphaerolaimus dispar (Filipjev, 1918) Filipjev, 1946
• Sphaerolaimus glaphyrus Vitiello, 1971
• Sphaerolaimus gracilis de Man, 1876
• Sphaerolaimus hirsutus Bastian, 1865
• Sphaerolaimus islandicus Ditlevsen, 1926 accepted as Parasphaerolaimus islandicus (Ditlevsen, 1926) Filipjev, 1946
• Sphaerolaimus latilaimus Allgén, 1958
• Sphaerolaimus lodosus Gerlach, 1956 accepted as Parasphaerolaimus lodosus Gerlach, 1956
• Sphaerolaimus macrocirculoides Wieser, 1954
• Sphaerolaimus macrocirculus Filipjev, 1918
• Sphaerolaimus maeoticus Filipjev, 1922
• Sphaerolaimus makrolasius Schulz, 1932
• Sphaerolaimus minutus Vitiello, 1971
• Sphaerolaimus ostreae Filipjev, 1918
• Sphaerolaimus pacificus Allgén, 1947
• Sphaerolaimus papillatus Kreis, 1929
• Sphaerolaimus paradoxus Ditlevsen, 1918 accepted as Parasphaerolaimus paradoxus Ditlevsen, 1918
• Sphaerolaimus paragracilis Vitiello, 1971
• Sphaerolaimus polaris (Filipjev, 1946) accepted as Parasphaerolaimus polaris Filipjev, 1946
• Sphaerolaimus profundus Vitiello, 1971
• Sphaerolaimus striatus Allgén, 1935 accepted as Parasphaerolaimus striatus (Allgén, 1935) Cavalcanti & Venekey, 2017
• Sphaerolaimus tenuis (Kreis, 1924) Schuurmans-Stekhoven, 1935 (uncertain > taxon inquirendum)
• Sphaerolaimus uncinatus Freudenhammer, 1970
• Subsphaerolaimus litoralis Lorenzen, 1978