The first Battle of Lechfeld (the first Battle of Augsburg in Hungarian historiography), fought on 12 June 910, was an important victory by a Magyar army over the combined forces of East Francia and Swabia (Alamannia) under the nominal command of Louis the Child. Located approximately 25 km (15.53 mi) south of Augsburg, the Lechfeld is the floodplain that lies along the river Lech. At this time the Grand Prince of the Hungarians was Zoltán, but there is no record of him taking part in the battle.

This battle is one of the greatest examples of the success of the feigned retreat tactic used by nomadic warriors, and an example of the effective use of psychological warfare.