The Second Battle of Athenry took place at Athenry in Ireland on 10 August 1316 during the Bruce campaign in Ireland.

The collective number of both armies are unknown, and can only be estimated. Martyn believes the royal army to have been as much as or more than a thousand, while that of Athenry was probably several hundred less. The list of deceased participants on the Irish side alone indicates that exceptionally high numbers were involved.

Outcome

Unlike the First Battle of Athenry in 1249, no account is given of the battle itself in any surviving account. Even the site of the battle itself is uncertain.

Rickard de Bermingham and William Liath de Burgh led an Anglo-Irish force to victory. John Clyn states that According to common report a sum of five …. thousand in all [were killed] the number decapitated was one thousand five hundred.

The battle was a devastating defeat for the Connacht Gaels, who were allied with the Scotsman Edward Bruce. Among those killed were kings Fedlim Ó Conchobair and Tadhg Ó Cellaigh King of Uí Maine.