Phoxinus is a genus of freshwater fish in the family Leuciscidae of order Cypriniformes, and the only members of the subfamily Phoxininae, or Eurasian minnows. The other species in this genus are also commonly known as minnows. The name "minnow" was what early English fisherman used to describe "small and insignificant". The genus Phoxinus is found throughout Eurasia, and includes 21 known species. Previously, members of the North American genus Chrosomus were also believed to form part of this genus.

Phoxinus contains the following species:

A single fossil phoxinine is known, the genus †Palaeorutilus Gaudant, 1988 from the early to late Oligocene of Europe.