The 2nd Lithuanian–Belarusian Division (Polish: 2. Dywizja Litewsko-Białoruska) was a unit of the Polish Army formed in July 1919 from parts of the 1st Lithuanian–Belarusian Division during the Polish–Soviet War. The division suffered heavy casualties during the Soviet invasion in summer 1920; some soldiers were forced to retreat into Lithuanian territory were they were interned. The division was soon recreated and renamed to the 20th Infantry Division. It temporarily returned to the old name after Żeligowski's Mutiny, when it became part of the military of the Republic of Central Lithuania.