The Eurasian minnow (Phoxinus phoxinus) is a species of freshwater fish. It is a member of the carp family (family Cyprinidae) of order Cypriniformes, and is the type species of genus Phoxinus. It is ubiquitous throughout much of Eurasia, from Britain and Spain to eastern Siberia, predominantly in cold (12–20 °C) streams and well-oxygenated lakes and ponds. It is noted for being a gregarious species, shoaling in large numbers.

The species is of drab coloration and unremarkable appearance, although the males display a red belly during the spawning season. It reaches a maximum overall length of 14 cm.

This fish is the archetypal minnow, and is also known as the common or European minnow. It is known by a great variety of names in the various languages spoken across its range: the French grisette, the German Elritze, the Russian гольян (gol'jan), etc. There are also many obsolete binomial synonyms; the original name assigned by Linnaeus was Cyprinus phoxinus.

The Eurasian minnow is used commercially primarily as bait; it is also important in laboratory research.

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