| Sergio Diez | |
| Birth Date: | 2 April 1925 |
| Birth Place: | Curicó, Chile |
| Death Place: | Santiago, Chile |
| Office1: | President of the Senate of Chile |
| Term Start1: | 11 March 1996 |
| Term End1: | 12 March 1997 |
| Predecessor1: | Gabriel Valdés Subercaseaux |
| Successor1: | Sergio Romero Pizarro |
| Office2: | Member of the Senate of Chile |
| Constituency2: | 15th Circunscription (Southern Araucanía) |
| Term Start2: | 11 March 1990 |
| Term End2: | 11 March 2002 |
| Predecessor2: | Creation of the charge |
| Successor2: | José García Ruminot |
| Constituency3: | 6th Circunscription (Curicó, Talca, Maule and Linares) |
| Term Start3: | 15 May 1973 |
| Term End3: | 11 September 1973 |
| Predecessor3: | José Foncea |
| Successor3: | Dissolution of the charge (1973 Coup d'état) |
| Office4: | Ambassador of Chile to the United Nations |
| Term Start4: | 1977 |
| Term End4: | 1982 |
| Predecessor4: | Ismael Huerta |
| Successor4: | Manuel Trucco Gaete |
| Office5: | Member of the Chamber of Deputies of Chile |
| Constituency5: | 14th Circunscription (Linares, Loncomilla and Parral) |
| Term Start5: | 16 January 1972 |
| Term End5: | 15 May 1973 |
| Predecessor5: | Carlos Avendaño Ortúzar |
| Successor5: | Alejandro Bell Jara |
| Constituency6: | 12th Circunscription (Talca, Lontué and Curepto) |
| Term Start6: | 15 May 1957 |
| Term End6: | 15 May 1965 |
| Predecessor6: | Fernando Hurtado Echeñique |
| Successor6: | Rodolfo Werner Inostroza |
| Party: | Conservative Party (1935–1949) Traditionalist Conservative Party (1949–1953) United Conservative Party (1953–1966) National Party (1966–1973) Renovación Nacional (1987–2015) |
| Occupation: | Politician |
| Profession: | Lawyer |
| Spouse: | Ana María Arriagada |
| Children: | Six |
Sergio Eduardo Diez Urzúa (2 April 1925 – 29 June 2015) was a Chilean architect and politician.
He is commonly remembered for having denied that arrested people disappeared during Pinochet dictatorship (1973–1990).[1] [2] [3] [4]
His parents were former Congressman Manuel Diez García and Yolanda Urzúa Ravanal. He graduated from the San Martín de Curicó Institute, belonging to the Congregation of the Marist Brothers, and then from the Faculty of Law of the Pontifical Catholic University, of which he graduated as a lawyer in 1948.[5]
In 1948, he was secretary general of the Conservative Party and then a member of its Executive Board. Between 1950 and 1955 he was a professor of Roman law and civil law.
In 1957 he was a deputy for Talca. In 1961 he was re-elected as a deputy for the 1961-1965 legislative period.[5]