Errisbeg Mountain or Errisbeg (Irish: Iorras Beag) is a hill in Roundstone, County Galway, in the West of Ireland, with a height of 300 m.

The summit has views of both the Roundstone bog and the Atlantic. On a clear day the Aran Islands are visible to the south and Clifden and the Twelve Bens to the North.

Media related to Errisbeg at Wikimedia Commons