The Battle of Aizkraukle or Ascheraden was fought on March 5, 1279, between the Grand Duchy of Lithuania, led by Traidenis, and the Livonian branch of the Teutonic Order near Aizkraukle (German: Ascheraden) in present-day Latvia. The order suffered a great defeat: 71 knights, including the grand master, Ernst von Rassburg, and Eilart Hoberg, leader of the knights from Danish Estonia, were killed. It was the second-largest defeat of the order in the 13th century. After the battle Duke Nameisis of the Semigallians recognized Traidenis as his suzerain.

The Livonian Order was an autonomous branch of the Teutonic Order,

formed in 1237. From 1435 to 1561 it was a member of the Livonian Confederation.