| Terry O'Brien | |
| Fullname: | Terrance Brian O'Brien |
| Birth Date: | 7 November 1918 |
| Birth Place: | Mordialloc, Victoria, Australia |
| Originalteam: | St Kilda CYMS |
| Height: | 159 cm |
| Weight: | 63 kg |
| Position: | Rover |
| Statsend: | 1941 |
| Years1: | 1940–41 |
| Games Goals1: | 13 (21) |
Terrance Brian O'Brien (7 November 1918 – 7 October 2011) was an Australian rules footballer who played with St Kilda in the Victorian Football League (VFL).[1]
O'Brien later served in the Royal Australian Air Force during the latter part of World War II.[2]