Cardiff RFC are saddened to learn of the untimely passing of John Smart MBE.
John had been a benefactor and board member of Cardiff RFC and Cardiff Blues since the inception of professional rugby.
Cardiff Blues chairman Peter Thomas said: "All of our thoughts and sincere condolences go to John's family following this very sad news.
"John, played for the Rags and became a substantial supporter and investor to Cardiff RFC and then Cardiff Blues.
"The contribution he made was a significant one. Not only was he a great rugby man but an entrepreneur in his own right and a devout family man."
The thoughts of everyone at Cardiff RFC & Cardiff Blues are with John's family and friends at this difficult time particularly his wife Kathy and his two sons Gareth and Alex.