| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Ernesto Mario•Chávez Paloma | |
| Used name | Mario•Chávez | |
| Born | 8 June 1929 in Florentino Ameghino, Provincia de Buenos Aires |  ARG |
| Died | 24 August 2007 (aged 78 years 2 months 16 days) in Buenos Aires, Ciudad Autónoma de Buenos Aires | ARG |
| NOC | Argentina | ARG |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1948 Summer Olympics | Swimming (Aquatics) | ARG |
Mario Chávez | |||
| 100 metres Backstroke, Men (Olympic) | =4 |
