Don has been a committed member of Old Crescent RFC since his playing days and he also played with UCC RFC and Lansdowne RFC.

The Old Crescent RFC Committee elected for the 2010-2011 season is: Don O’Malley, President, Eddie Frost, Senior Vice President, Vincent Banks, Junior Vice President, Dale Harrow, Hon Secretary, John Earls, Hon Treasurer, Ken Lyons, Munster Branch Delegate, Bill Hanly, Hon Fixture Secretary, Frank Larkin, Media Officer, Pat Rickard, Club Registrar, Niall Sheehy, Ex-Officio, and Committee members, Tom Barry, Dan Gallery, Dermot McGovern, Anthony O’Dwyer, and Eugene O’Riordain.