| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Francis Mark•Bethwaite | |
| Used name | Mark•Bethwaite | |
| Born | 20 March 1948 in Auckland, Auckland |  NZL |
| Measurements | 185 cm / 74 kg | |
| NOC | Australia |  AUS |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1972 Summer Olympics | Sailing | AUS |
Mark Bethwaite | |||
| Two-Person Heavyweight Dinghy, Open (Olympic) | Tim Alexander | 8 | ||||
| 1976 Summer Olympics | Sailing | AUS |
Mark Bethwaite | |||
| Two-Person Heavyweight Dinghy, Open (Olympic) | Tim Alexander | 9 |
