| Mario Ortiz | |
| Fullname: | Mario Sergio Ortiz Vallejos |
| Birth Date: | 28 January 1936 |
| Birth Place: | Santiago, Chile |
| Death Place: | Santiago, Chile |
| Position: | Midfielder |
| Years1: | 1949–1953 |
| Clubs1: | Green Cross |
| Years2: | 1954–1957 |
| Clubs2: | Palestino |
| Years3: | 1958–1965 |
| Clubs3: | Colo-Colo |
| Years4: | 1966 |
| Clubs4: | Luis Cruz Martínez |
| Nationalteam1: | Chile |
Mario Sergio Ortiz Vallejos (28 January 1936 – 2 May 2006 in Santiago, Chile) was a Chilean footballer who played as a midfielder.[1]
Ortiz played club football for Palestino and Colo-Colo, where he won league titles in 1960 and 1963.
He played for the Chile national football team in the 1962 FIFA World Cup, where he played as a midfielder, as Chile achieved a third-place finish.
On 6 April 1965, Ortiz was one of the constituent footballers of, the trade union of professionales footballers in Chile, alongside fellows such as Efraín Santander, Francisco Valdés, Hugo Lepe, among others.[2]
He died in 2006.