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

See also: Rivers of Poland