| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | John Michael "Jack"•Zwirewich | |
| Used name | Jack•Zwirewich | |
| Born | 11 February 1929 | |
| Died | 16 September 1989 (aged 60 years 7 months 5 days) in Ottawa, Ontario |  CAN |
| Affiliations | Leander Boat Club — Hamilton, Ontario | CAN |
| NOC | Canada | CAN |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1948 Summer Olympics | Rowing | CAN |
Jack Zwirewich | |||
| Eights, Men (Olympic) | Canada | 2 h2 r3/4 | ||||
| 1952 Summer Olympics | Rowing | CAN |
Jack Zwirewich | |||
| Coxless Fours, Men (Olympic) | Canada | 3 h2 r2/5 |
