The Shillelagh Tournament is a Division I men's college ice hockey tournament hosted annually during the NCAA Division I men's ice hockey season by the Notre Dame Fighting Irish men's ice hockey program. It was first held during the 2008–09 NCAA Division I men's ice hockey season as the successor to the Lightning College Hockey Classic. After the Tampa Bay Lightning withdrew as tournament sponsor because of ownership changes, the Notre Dame Fighting Irish men's ice hockey program took control of the event, moving it to the Sears Centre in Hoffman Estates, Illinois.