Wieprz is a river in central-eastern Poland, a tributary of the Vistula river, with a length of 303 kilometres (9th longest) and the basin area of 10,415 sq. km. (all in Poland).
Towns:
- Krasnobrod
- Zwierzyniec
- Szczebrzeszyn
- Krasnystaw
- Leczna
- Lubartow
- Deblin