| Spencer Brown | |
| Birth Name: | Spencer William Brown[1] |
| Birth Date: | 18 October 1921 |
| Birth Place: | Atherton, Queensland |
| Death Date: | c. 1973 |
| Ru Position: | fly-half |
| Repyears1: | 1953 |
| Repteam1: | Wallabies |
| Repcaps1: | 3 |
| Reppoints1: | 0 |
Spencer William Brown (18 October 1921 – c. 1973) was a rugby union player who represented Australia.
Brown, a fly-half, was born in Atherton, Queensland and claimed a total of 3 international rugby caps for Australia.