Ballycassidy (from Irish Baile Uí Chaiside, meaning 'O’Cassidy’s townland') is a small village and townland (of 83 acres) in County Fermanagh, Northern Ireland, 6.5 km north of Enniskillen on the eastern shore of Lower Lough Erne.

The Ballycassidy River flows into Lower Lough Erne a short distance to the west.

There is also a racehorse called Ballycassidy, named after the village, who was trained in Wales by Peter Bowen.

The horse is notorious for a spectacular fall at Valentines Brook in the 2006 Grand National at Aintree.

This article related to the geography of County Fermanagh, Northern Ireland is a stub.