| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Brett Geoffrey•de Thier | |
| Used name | Brett•de Thier | |
| Born | 14 June 1945 in Christchurch, Canterbury |  NZL |
| Measurements | 185 cm | |
| Affiliations | Christchurch Yacht Club — Christchurch, Canterbury | NZL |
| NOC | New Zealand | NZL |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1972 Summer Olympics | Sailing | NZL |
Brett de Thier | |||
| One-Person Heavyweight Dinghy, Men (Olympic) | 10 |
