| Brian Mansfield | |
| Birth Name: | Brian William Mansfield[1] |
| Birth Date: | 8 November 1948 |
| Birth Place: | Moree, New South Wales |
| Ru Position: | lock |
| Repyears1: | 1975 |
| Repteam1: | Wallabies |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
Brian William Mansfield (born 8 November 1948) was a rugby union player who represented Australia.
Mansfield, a lock, was born in Moree, New South Wales and claimed 1 international rugby cap for Australia.