| Peter Flanagan | |
| Birth Name: | Peter Flanagan[1] |
| Birth Date: | c. 1886 |
| Birth Place: | Dublin |
| Death Date: | c. |
| Death Place: | California, United States |
| Ru Position: | flanker |
| Repyears1: | 1907 |
| Repteam1: | Wallabies |
| Repcaps1: | 2 |
| Reppoints1: | 0 |
Peter Flanagan (c. 1886–c. 1952) was a rugby union player who represented Australia.
Flanagan, a flanker, was born in Dublin and claimed a total of 2 international rugby caps for Australia.