The Battle of Legnica, also known as the Battle of Liegnitz or Battle of Wahlstatt, is a battle between the Mongol Empire and the combined defending forces of European fighters that takes place at Legnickie Pole (Wahlstatt) near the city of Legnica in the Silesia province of the Kingdom of Poland on April 9, 1241.A combined force of Poles, Czechs and Germans under the command of the Polish duke Henry II the Pious of Silesia, supported by feudal nobility and a few knights from military orders sent by the Pope, attempt to halt the Mongol invasion of Europe.

The battle comes two days before the Mongol victory over the Hungarians at the much larger Battle of Mohi.