Benjamín Urdapilleta (born March 11, 1986, in Buenos Aires) is an Argentinerugby union footballer. He has played in both the centre and the flyhalf positions. His test debut for Argentina was in 2008 when he played against South Africa in Johannesburg. He signed for the Harlequins in March 2010. During the 2016-2017 season he played for Castres Olympique.