Glan Letheren (born 1 May 1956) is a Welsh former professional footballer. He played in the Football League as a goalkeeper for Leeds United, Scunthorpe United, Chesterfield and Swansea City. Despite being called up to the Wales squad, Letheren never achieved a full international cap. He was also a successful cricketer in the , playing mainly for , as a medium pace bowler and middle order batsman. Letheren's son Kyle also became a professional football goalkeeper. He was also called up and remains uncapped by Wales.