Matt Mostyn is a retired Irish-Australian rugby player. He earned six caps playing as a wing for the Ireland national rugby union team, including four at the 1999 Rugby World Cup, being eligible through a grandparent from County Tyrone.[3] He played club rugby with the New South Wales Waratahs in Australia, with Bordeaux in France, Newport in Wales and Ireland, finishing his career at Connacht and Galwegians in 2008.