José María Núñez Piossek (born 6 December 1976, in Tucumán) is an Argentine rugby union footballer, currently playing for Scottish club Glasgow Warriors in the Celtic League. He has also represented the Argentina national team, including being a part of their 2003 Rugby World Cup squad. His usual position is on the wing. He made his international debut for Argentina in May 2001 in a match against Uruguay. He played one other match that year; coming off the bench in a match against the All Blacks. In 2002, he played in four Tests including games against Uruguay, Paraguay, Chile and Australia.