| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Mário•da Silva Marques | |
| Used name | Mário•da Silva Marques | |
| Born | 23 September 1901 in Almada, Distrito de Setúbal |  POR |
| Died | 1989 | |
| Affiliations | Casa Pia AC — Lisboa, Distrito de Lisboa | POR |
| NOC | Portugal | POR |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1924 Summer Olympics | Swimming (Aquatics) | POR |
Mário da Silva Marques | |||
| 200 metres Breaststroke, Men (Olympic) | 28 |
