The Owenmore River (Irish: An Abhainn Mhór[1]) is a river in northwest County Mayo, Ireland.

It is big spate river and drains a large area of bogs, moorland and mountains.

[2] The Owenmore River rises in the Nephin Beg Range, flowing first northwards to meet the Oweninny River, and continuing westwards through Bangor Erris before flowing out southwestwards through Tullaghan Bay into the Atlantic Ocean.

The Owenmore River is a noted salmon, grilse and trout fishery.

This article related to a river in Ireland is a stub.