Stupnica (river)
| Stupnica | |
|---|---|
| Location | |
| Country | Poland | 
| Physical characteristics | |
| Mouth | |
 • location  | San | 
 • coordinates  | 49°46′50″N 22°28′57″E / 49.78056°N 22.48250°E | 
| Basin features | |
| Progression | San→ Vistula→ Baltic Sea | 
Stupnica is a right tributary of the San River in southeastern Poland. Its length is roughly 28 kilometres. It joins the San near Bachów.