Sean's Bar is a pub in Athlone, Ireland. It claims to be the oldest pub in Ireland, dating back to 900 A.D. In 2004 Guinness World Records listed Sean's Bar as the oldest pub in Europe. Sean's Bar is located at 13 Main Street, Athlone, on the west bank of the River Shannon, and was originally known as Luain's Inn. It is often colloquially referred to simply as Sean's.