The Western Berezina or simply Berezina (Belarusian: Заходняя Бярэзіна, romanized: Zakhodnyaya Byarezina or Zachodniaja Biarezina) is a river in Belarus, a right tributary of the river Neman.

It flows for 226 km and its basin area is approximately 4,000 km. The river rises near Maladechna. Its longest tributary is the Islach (102 km).