|Full name||Christian Lionel Díaz|
|Date of birth||12 May 1976|
|Place of birth||Florencio Varela, Argentina|
|Height||Script error: No such module "convert".|
|2015-||Club Deportivo Universidad de San Martín de Porres|
Christian Lionel Díaz (born 12 May 1976 in Florencio Varela Partido, Buenos Aires) is an Argentine retired footballer who played as a defender, and a current manager of Club Deportivo Universidad de San Martín de Porres of the Primera División Peruana.
Díaz started his career with Club Atlético Independiente in 1995. In his first season as a professional he helped El Diablo Rojo win the South American Supercup, in an eventual 2–1 aggregate win against Clube de Regatas do Flamengo, and appeared in more than 150 official games with the club during his five-year spell.
In 2000 Díaz moved to Italy and joined Udinese Calcio, only missing three Serie A matches as the team finished in 12th position. In the following four years he played in Spain, representing RCD Mallorca, Levante UD, Albacete Balompié, Ciudad de Murcia and UD Almería, having little overall impact and only totalling 14 La Liga games with the first and the third sides combined.
Díaz returned to his country in 2005, successively representing Olimpo de Bahía Blanca, Club Atlético Huracán and Arsenal de Sarandí, winning two major titles with the latter club including the 2007 Copa Sudamericana. He retired from football in 2009, at the age of 33.
- Arsenal Sarandí