| Pirmin Stierli | |
| Birth Date: | 9 October 1947 |
| Birth Place: | Baar, Switzerland |
| Height: | 1.72 m |
| Position: | Defender |
| Years1: | 1965–1966 |
| Years2: | 1966–1969 |
| Years3: | 1969–1970 |
| Years4: | 1970 |
| Years5: | 1970–1978 |
| Clubs3: | → RSC Anderlecht (loan) |
| Clubs5: | FC Zürich |
| Caps5: | 187 |
| Goals5: | 5 |
| Nationalyears1: | 1968–1974 |
| Nationalteam1: | Switzerland |
| Nationalcaps1: | 16 |
| Nationalgoals1: | 0 |
Pirmin Stierli (born 9 October 1947) is a former Swiss football player. During his career he played for FC Zug, FC Zürich, RSC Anderlecht and Neuchâtel Xamax.
He made 16 appearances for the Switzerland national team between 1968 and 1974.