Barry Cassidy is a Gaelic football referee. An inter-county championship referee since 2012,[1] Cassidy has been described as the top referee in Ulster.[2] A member of the Derry GAA club Bellaghy, Cassidy refereed the inaugural Tailteann Cup final. He is said to be one of the worst referees after a foolish decision to have a penalty instead of a free out in a Roscommon vs Mayo match in 2024, round Robin group stages