Diacyclops abyssicola- Diacyclops alabamensis
- Diacyclops albus
- Diacyclops antrincola
- Diacyclops bernardi
- Diacyclops biceri
- Diacyclops bicuspidatus
- Diacyclops bisetosus
- Diacyclops chakan
- Diacyclops charon
- Diacyclops chrisae
- Diacyclops clandestinus
- Diacyclops conversus
- Diacyclops crassicaudis
- Diacyclops dimorphus
- Diacyclops disjunctus
- Diacyclops dispinosus
- Diacyclops eriophori
- Diacyclops eulitoralis
- Diacyclops harryi
- Diacyclops haueri
- Diacyclops hiberniae
- Diacyclops hispidus
- Diacyclops hypnicola
- Diacyclops jeanneli
- Diacyclops languidulus
- Diacyclops languidus
- Diacyclops michaelseni
- Diacyclops mirnyi
- Diacyclops nanus
- Diacyclops navus
- Diacyclops nearcticus
- Diacyclops nikolasarburni
- Diacyclops palustris
- Diacyclops puuc
- Diacyclops sororum
- Diacyclops thomasi
- Diacyclops uruguayensis
- Diacyclops virginianus
- Diacyclops yeatmani