The Cregg River (Irish: Abhainn na Creige)[1] is a river in County Galway, Ireland.

The river rises from a spring a half mile to the north of Cregg Mill, and flows for about seven miles into Lough Corrib.

The upper stretch of the river is a nursery for fish stocking of Lough Corrib, while salmon and brown trout fishing is permitted on the lower stretches.

The nineteenth century Ordnance Survey Ireland maps show that the river was much wider at that point.

[3] However, due to artificial changes to the water level of Lough Corrib and the canalisation of the river, the river is now much narrower.