| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Mário•Gentil Quina Helsínquia | |
| Used name | Mário•Quina | |
| Born | 1 January 1930 in Estoril, Cascais, Distrito de Lisboa |  POR |
| Died | 8 September 2017 (aged 87 years 8 months 7 days) in Lisboa, Distrito de Lisboa | POR |
| Measurements | 182 cm / 75 kg | |
| NOC | Portugal | POR |
| Medals | OG |
| Gold | 0 |
| Silver | 1 |
| Bronze | 0 |
| Total | 1 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1952 Summer Olympics | Sailing | POR |
Mário Quina | |||
| One-Person Heavyweight Dinghy, Men (Olympic) | 17 | |||||
| 1960 Summer Olympics | Sailing | POR |
Mário Quina | |||
| Two-Person Keelboat, Men (Olympic) | José Manuel Quina | 2 | Silver | |||
| 1968 Summer Olympics | Sailing | POR |
Mário Quina | |||
| Two-Person Keelboat, Men (Olympic) | José Manuel Quina | 17 | ||||
| 1972 Summer Olympics | Sailing | POR |
Mário Quina | |||
| Three-Person Keelboat, Open (Olympic) | Portugal | 21 |
