|Full name||Ruben Wálter Paz Márquez|
|Date of birth||8 August 1959|
|Place of birth||Artigas, Uruguay|
|Height||1.74 m (5 ft 8 1⁄2 in)|
|1975–1976||Peñarol de Artigas|
|1986–1987||Racing Club Paris||6||(0)|
|1995||Frontera Rivera Chico||?||(?)|
|1996||Wanderers de Artigas||?||(?)|
|* Senior club appearances and goals counted for the domestic league only.
Ruben Wálter Paz Márquez (born 8 August 1959 in Artigas) is a Uruguayan former footballer who played as a midfielder. Paz played at two FIFA World Cups for Uruguay and was also South American Footballer of the Year in 1988. He retired in 2006 at the age of 47. He's currently Peñarol's assistant coach.
Ruben Paz began his career at the age of 17 when he joined the Club Atlético Peñarol Montevideo in 1977. He played in Peñarol until 1981, where he obtained important achievements, winning 3 consecutive championships Uruguayans (1978-79-80).
In 1982, he emigrated to the Brazilian League, specifically the Rio Grande do Sul team Internacional where he won three consecutive championships Gauchos (1982-83-84).
In 1986 makes the leap to Europe, specifically to Matra Racing Paris (now the Racing Club de France) of the Ligue 1 of the French Football League, where he highlighted alongside his compatriot Enzo Francescoli.
The following year he was transferred to Racing Club de Avellaneda in the Argentine league, where he becomes the team leader and an idol for the fans of the squad that conquered the South American Super Cup and Super Cup Inter in 1988. He was one of the few players in the Argentinian football was respected by all supporters. That same year he was awarded the trophy as the Best Player of South America.
During the 1989-90 season to play in the Serie A of the Italian Football League hired by the Genoa, which coincides with two other of his compatriots, Jose Perdomo and Carlos Alberto Aguilera.
The following year he returned to Racing Club. In 1992, he returned to Uruguay to play in Rampl Juniors, and then punch by the Club Frontera Rivera.
In 1995, he played for Godoy Cruz de Mendoza. Later continue to play in smaller clubs to leave football in 2006.
Participated in the Uruguayan team that won the Mundialito in 1980. Later he played in two editions of the World Cup, those held in Mexico in 1986 and Italy in 1990, in which his national team was eliminated in second round by Italy.
- Primera División Uruguaya: 1978, 1979, 1981 and 1982.
- Campeonato Gaúcho: 1982, 1983 and 1984.
- Liga Mayor de San José: 2003 and 2004.
- Supercopa Sudamericana: 1988.
- Supercopa Interamericana: 1988.
- Mundialito: 1981, for Uruguay national football team.