- Molgolaimus allgeni (Gerlach, 1950) Jensen, 1978
- Molgolaimus citrus Gerlach, 1959
- Molgolaimus cuanensis (Platt, 1973) Jensen, 1978
- Molgolaimus demani Jensen, 1978 accepted as Microlaimus tenuispiculum de Man, 1922
- Molgolaimus lazonus (Vitiello, 1970) Jensen, 1978
- Molgolaimus minutus Jensen, 1988
- Molgolaimus spirifer (Warwick, 1970) Shi & Xu, 2017
- Molgolaimus tenuispiculum Ditlevsen, 1921
- Molgolaimus turgofrons (Lorenzen, 1971) Jensen, 1978
