List of Champions

2015-2016

GUINNESS PRO12

2014-2015

GUINNESS PRO12

2013-2014

RaboDirect PRO12

2012-2013

RaboDirect PRO12

2011-2012

RaboDirect PRO12

2010-2011

Magners League

2009-2010

Magners League

2008-2009

Magners League

2007-2008

Magners League

2006-2007

Magners League

2005-2006

Celtic League

2004-2005

Celtic League

2003-2004

Celtic League

2002-2003

Celtic League

2001-2002

Celtic League