- Mesenchytraeus altus
- Mesenchytraeus antaeus
- Mesenchytraeus arcticus
- Mesenchytraeus armatus
- Mesenchytraeus asiaticus
- Mesenchytraeus beumeri
- Mesenchytraeus chaunus
- Mesenchytraeus diverticulatus
- Mesenchytraeus eltoni
- Mesenchytraeus falciformis
- Mesenchytraeus flavus
- Mesenchytraeus fuscus
- Mesenchytraeus gaudens
- Mesenchytraeus gelidus
- Mesenchytraeus glandulosus
- Mesenchytraeus hamiltoni
- Mesenchytraeus harrimani
- Mesenchytraeus johanseni
- Mesenchytraeus kontrimavichusi
- Mesenchytraeus kuril
- Mesenchytraeus maculatus
- Mesenchytraeus melanocephalus
- Mesenchytraeus mirabilis
- Mesenchytraeus nanus
- Mesenchytraeus obscurus
- Mesenchytraeus orcae
- Mesenchytraeus pedatus
- Mesenchytraeus pelicensis
- Mesenchytraeus primaevus
- Mesenchytraeus rhithralis
- Mesenchytraeus snoqualmi
- Mesenchytraeus solifugus
- Mesenchytraeus straminicolus
- Mesenchytraeus svetae
- Mesenchytraeus torbeni
- Mesenchytraeus tundrus