| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Leslie Thomas "Les"•Mason | |
| Used name | Les•Mason | |
| Born | 18 August 1934 in Stellarton, Nova Scotia |  CAN |
| Measurements | 63 kg | |
| NOC | Canada | CAN |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1956 Summer Olympics | Boxing | CAN |
Les Mason | |||
| Light-Welterweight, Men (Olympic) | =9 |
