| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Peter Gregory "Greg"•Johnston | |
| Used name | Greg•Johnston | |
| Born | 16 May 1959 in Devonport, Auckland |  NZL |
| Measurements | 195 cm / 91 kg | |
| Affiliations | Waikato Rowing Club — Hamilton, Waikato | NZL |
| NOC | New Zealand | NZL |
| Medals | OG |
| Gold | 0 |
| Silver | 0 |
| Bronze | 1 |
| Total | 1 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1984 Summer Olympics | Rowing | NZL |
Greg Johnston | |||
| Eights, Men (Olympic) | New Zealand | 4 | ||||
| 1988 Summer Olympics | Rowing | NZL |
Greg Johnston | |||
| Coxed Pairs, Men (Olympic) | New Zealand | DNS h1 r3/4 | ||||
| Coxed Fours, Men (Olympic) | New Zealand | 3 | Bronze |
