The River Erkina (Irish: An tOircín) is a river that flows through the county of Laois in Ireland.

It is a tributary of the River Nore.

It has its source on the Laois-Kilkenny border south of Rathdowney.

[4] It flows north towards Rathdowney and then turns east in the direction of Durrow entering the River Nore around 1.5 km east of the town.

Rivers of Ireland