The River Clare is a river in counties Mayo and Galway in Ireland.
The 93 kilometres long river rises north of Ballyhaunis in Mayo and descends past Dunmore, where it flows west, then turns south past Milltown continuing down through Kilbennan Church near Tuam. It continues south until past Turloughmore, then turns sharply west, flowing north of Claregalway and, thence, further westward into Lough Corrib.
The River Corrib flow from the lake into Galway Bay. The Clare is the longest river in the Lough Corrib catchment.
