Sean David Clohessy (born 12 December 1986) is an English footballer who plays as a defender for Kingstonian. Having risen through the Arsenal Academy, he continued his development with Gillingham, where he made his professional debut. He had a successful loan spell with Salisbury City during the 2008–09 season, and joined the club on a permanent basis the following season. After one year with the Whites, he joined league rivals Bath City, but soon left to sign a contract with Southend United. He spent three years at Southend, making over 150 appearances in all competitions. He left the club in 2013 to join Scottish Premiership club Kilmarnock. He spent one season with Killie before returning to England to sign for Colchester United.