Chief executive Robert Norster is to leave Cardiff Blues, the club has announced.
The 54-year-old, who previously played for Cardiff RFC, has been in the role since 2001.
"Following considerable deliberation since the summer period, I now believe it is an appropriate time for a successor to carry forward the colours and build on the success of recent years," he told the club's official website.
"It has been an absolute privilege to have led the Blues since its inception and indeed to have proudly represented Cardiff RFC prior, both as a player and administrator.
"After what has been an amazing and eventful journey over more than ten years as CEO, I would like to thank the board of directors for the opportunity and Chairman Peter Thomas in particular for his invaluable support to me and the team throughout my time at the helm."
The Blues are currently sixth in the RaboDirect Pro12 table.
