| Olympic medal record | ||
|---|---|---|
| Men's swimming | ||
| Competitor for Australia | ||
| Bronze | 1968 Mexico City | 1500 m freestyle |
Gregory "Greg" Brough (born 26 March 1951 in Surfers Paradise, Queensland) was an Australian long distance freestyle swimmer of the 1960s and 1970s, who won a bronze medal in the 1500 m freestyle at the 1968 Mexico City Olympics.
In Mexico City, Brough finished behind the United States world record holder Mike Burton and his teammate John Kinsella. He also finished fourth in the 400 m, also won by Burton. At the 1970 Commonwealth Games in Edinburgh, Brough won a bronze in the 400 m behind fellow Australian Graham White.