The Battle of Radzymin () took place during the Polish–Soviet War (1919–21). The battle occurred near the town of Radzymin, some north-east of Warsaw, between August 13 and 16, 1920. Along with the Battle of Ossów and the Polish counteroffensive from the Wieprz River area, this engagement was a key part of what later became known as the Battle of Warsaw. It also proved to be one of the bloodiest and most intense battles of the Polish–Soviet War.