Ronan (Ronnie) McCormack (born 27 April 1977) was a professional rugby union player from Ireland. He recently played provincial rugby for Leinster and club rugby for University College Dublin RFC. McCormack began his rugby career at St. Mary's College in Rathmines in Dublin, winning both Leinster Junior and Senior cup medals. He spent two years playing with Connacht and Ulster before returning to Leinster and UCD RFC.He is a regular member of the UCD AIL Division One starting fifteen. McCormack was called up to the senior Ireland squad for the 2005 Six Nations Championship.