| Peter Buchanan | |
| Birth Name: | Peter Neave Buchanan[1] |
| Birth Date: | 11 January 1889 |
| Birth Place: | Wellington |
| Ru Position: | centre |
| Repyears1: | 1923 |
| Repteam1: | Wallabies |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
Peter Neave Buchanan (11 January 1889 – 30 January 1957) was a rugby union player who represented Australia.
Buchanan, a centre, was born in Wellington and claimed 1 international rugby cap for Australia.