| Gregory Shambrook | |
| Birth Name: | Gregory George Shambrook[1] |
| Birth Date: | 3 January 1953 |
| Birth Place: | Bilinga, Queensland |
| Height: | 5'9 |
| Weight: | 140 pounds |
| Occupation: | Chiropractor |
| Spouse: | Keryn Shambrook |
| Children: | Joel Shambrook, Reece Shambrook,Liam Shambrook |
| Ru Position: | centre |
| Repyears1: | 1976 |
| Repteam1: | Wallabies |
| Repcaps1: | 2 |
| Reppoints1: | 0 |
Gregory George Shambrook (born 3 January 1953) was a rugby union player who represented Australia.
Shambrook, a centre, was born in Bilinga, Queensland and claimed a total of 2 international rugby caps for Australia.