The Sluch or Northern Sluch (Belarusian: Случ, Паўночная Случ; Russian: Случь, Северная Случь; Lithuanian: Slučė, Šiaurinė Slučė; Slovak: Sluč, Severní Sluč) is a river in Belarus. Rising in Minsk Oblast, it flows past the cities of Salihorsk and Slutsk, finally emptying into the Pripyat. It is 228 kilometres (142 mi) long, and has a drainage basin of 5,260 square kilometres (2,030 sq mi).

The Moroch River [Wikidata] (also spelled Morocz or Morach), a right tributary of the Sluch, originates in the Kopyl' Ridge [Wikidata]. Under Article 2 of the Treaty of Riga (1921), it defined part of the border between Poland and the Soviet Union.

• Sluch (Ukraine), or Southern Sluch