Rossbeigh is a beach, approximately 1.6 km from the village of Glenbeigh, in County Kerry, Ireland. It is on the Ring of Kerry on the Iveragh Peninsula. Rossbeigh is part of the Castlemaine Harbour Special Area of Conservation, Special Protection Area, and proposed Natural Heritage Area (pNHA). These organisations consider Rossbeigh an important habitat for flora and fauna and wish to preserve the area.
Every year there there is a Horse Racing Festival at the beach at the end of the summer. In 2008, a 1200 ft sand dune disappeared into the sea. The Rossbeigh Strand Tower, which had been a landmark to Castlemaine Harbour for over 100 years collapsed in February 2011. In 2013, it was reported in The Irish Independent newspaper that since the 2008 collapse, five million tonnes of sand have been lost.