The Duke, who presented WRU president Dennis Gethin with his OBE earlier this month, became Vice Royal Patron of the Welsh Rugby Union in February 2007 and later became Vice Patron following the death of Sir Tasker Watkins VC.
Dennis Gethin OBE said, “We thank Her Majesty The Queen for her support of the Welsh Rugby Union over the years.
“We are delighted that The Duke of Cambridge will take over from his grandmother as Patron of the Welsh Rugby Union. Since becoming Vice Patron in 2007, His Royal Highness has been a great ambassador, not only for the Welsh Rugby Union, but for young people and for sport generally.
“He makes a great difference to everyone he meets on his regular visits to Wales and to Principality Stadium, interacting with all kinds of individuals and groups including players past and present, volunteers, apprentices, veterans and staff. The Duke is also Patron of the Welsh Rugby Charitable Trust which helps severely injured rugby players and their families. He is particularly generous in his help of this charity. We look forward to his presence and continued support in his new role as WRU Patron.”