|Full name||Cillian Willis|
|Date of birth||19 January 1985|
|Place of birth||Dublin, Ireland|
|Height||1.77 m (5 ft 9 1⁄2 in)|
|Weight||82 kg (12 st 13 lb)|
|University||University College Dublin|
|Rugby union career|
Cillian Willis (born 19 January 1985) is a former professional rugby union footballer. His primary position was scrum-half.
Willis broke through into the Leinster team due to injuries to Chris Whittaker and Guy Easterby early on in the 2006/2007 season. His performances earned him the Leinster Player of the Month Award for October/November. Willis is also cousin to Brian O'Driscoll. In July 2010, Willis signed a new contract with Connacht Rugby and joined his new squad on their pre-season training trip on the Aran Islands. He left Connacht after one season and with Eoin Reddan and Isaac Boss both called into the Irish World Cup squad he was given a contract until October 2011 by Leinster. Willis signed for Sale Sharks for the 2011/2012 season.