 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Terrence Steven "Terry"•Gathercole | 
| Used name | Terry•Gathercole | 
| Born | 25 November 1935 in Tallimba, New South Wales (AUS) | 
| Died | 30 May 2001 in Canberra, Australian Capital Territory (AUS) | 
| Measurements | 177 cm / 76 kg | 
| Affiliations | ?, Victoria, (AUS) / ?, Queensland, (AUS) | 
| NOC |  Australia | 
| Medals | OG | 
| Gold | 0 | 
| Silver | 1 | 
| Bronze | 0 | 
| Total | 1 | 
Terry Gathercole had the following podium finishes at major championships: 2nd in the 1960 Olympics 4×100 metres Medley Relay; 1st in the 1958 British Empire and Commonwealth Games 220 yards Breaststroke, 1st in the 1958 British Empire and Commonwealth Games 4×110 yards Medley Relay (with Gary Chapman, John Monckton, and John Devitt).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1956 Summer Olympics | Swimming (Aquatics) |  AUS | Terry Gathercole | |||
| 200 metres Breaststroke, Men (Olympic) | 4 | |||||
| 1960 Summer Olympics | Swimming (Aquatics) |  AUS | Terry Gathercole | |||
| 200 metres Breaststroke, Men (Olympic) | 6 | |||||
| 4 × 100 metres Medley Relay, Men (Olympic) | Australia | 2 | Silver |