| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Otakar•Mareček |
| Used name | Otakar•Mareček |
| Born | 14 June 1943 in Praha (Prague), Hlavní město Praha (CZE) |
| Died | 25 January 2020 |
| Measurements | 192 cm / 92 kg |
| NOC | Czechoslovakia |
| Nationality | Czechia |
| Medals | OG |
| Gold | 0 |
| Silver | 0 |
| Bronze | 1 |
| Total | 1 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | Nationality | As | |
|---|---|---|---|---|---|---|---|
| 1968 Summer Olympics | Rowing | TCH |
CZE |
Otakar Mareček | |||
| Eights, Men (Olympic) | Czechoslovakia | 5 | |||||
| 1972 Summer Olympics | Rowing | TCH |
CZE |
Otakar Mareček | |||
| Coxed Fours, Men (Olympic) | Czechoslovakia | 3 | Bronze | ||||
| 1976 Summer Olympics | Rowing | TCH |
CZE |
Otakar Mareček | |||
| Coxed Fours, Men (Olympic) | Czechoslovakia | 4 |