| Roles | Competed in Olympic Games • Coach | 
|---|---|
| Sex | Male | 
| Full name | Gregg•Clark | 
| Used name | Gregg•Clark | 
| Born | 11 January 1971 in Johannesburg, Gauteng (RSA) | 
| Measurements | 172 cm / 70 kg | 
| Affiliations | Sandton, Johannesburg | 
| NOC |   South Africa | 
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1996 Summer Olympics | Hockey |  RSA | 
Gregg Clark | |||
| Hockey, Men (Olympic) | South Africa | 10 | ||||
| 2004 Summer Olympics | Hockey |  RSA | 
Gregg Clark | |||
| Hockey, Men (Olympic) | South Africa | 10 | 
| Games | Sport (Discipline) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2008 Summer Olympics | Hockey |  RSA | 
Gregg Clark | |||
| Hockey, Men (Olympic) | South Africa | 12 | ||||
| 2012 Summer Olympics | Hockey |  RSA | 
Gregg Clark | |||
| Hockey, Men (Olympic) | South Africa | 11 |