Tribonyx is a small genus of birds in the rail family, containing two extant species and one recently extinct species. The genus is endemic to Australia and New Zealand. They are sometimes lumped with the moorhens in Gallinula.
The living and recently extinct species are:
| Image | Common Name | Scientific name | Distribution | |
|---|---|---|---|---|
| Tribonyx ventralis (Gould, 1837) | Australia | |||
| Tribonyx mortierii du Bus de Gisignies, 1840 | ||||
| Hodgens' waterhen | †Tribonyx hodgenorum (Olson, 1986) | New Zealand (extinct) |