Ronan McCormack (born 27 April 1977) was a professional rugby union

Rugby union

Rugby union, often simply referred to as rugby, is a full contact team sport which originated in England in the early 19th century. One of the two codes of rugby football, it is based on running with the ball in hand...

 player from Ireland. He recently played provincial rugby for Leinster

Leinster Rugby

Leinster Rugby, usually referred to simply as Leinster, is an Irish professional rugby union team based in Dublin, representing the Irish province of Leinster, that competes in the RaboDirect Pro 12 and also competes in the Heineken Cup...

 http://www.leinsterrugby.ie/3312.php http://www.independent.ie/sport/rugby/magners-league/relief-for-cheika-as-leinster-guile-ends-try-drought-1649766.html 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

Leinster Schools Senior Cup

The Leinster Schools Senior Challenge Cup is the premier rugby union competition for secondary schools affiliated to the Leinster Branch of the IRFU. First held in 1887, the Cup celebrated its 120th anniversary in 2007....

 medals. He spent two years playing with Connacht

Connacht Rugby

Connacht Rugby is an Irish professional rugby union team based in Connacht that competes in the RaboDirect Pro12 comprising teams from the Celtic nations plus Italy. Normally, it also competes in the second-tier pan-European club competition, the European Challenge Cup...

 and Ulster

Ulster Rugby

Ulster Rugby, usually referred to simply as Ulster, is an Irish professional rugby union team based in Belfast, representing the Irish province of Ulster, that competes in the RaboDirect Pro12 and also competes in the Heineken Cup...

 before returning to Leinster

Leinster Rugby

Leinster Rugby, usually referred to simply as Leinster, is an Irish professional rugby union team based in Dublin, representing the Irish province of Leinster, that competes in the RaboDirect Pro 12 and also competes in the Heineken Cup...

 and UCD RFC.
He is a regular member of the UCD AIL Division One starting fifteen.

McCormack announced his retirement in November 2010 due to a neck injury.