The Battle of Lambach (Russian: Бой при Ламбахе, French: Bataille de Lambach, German: Gefecht bei Lambach) was a minor French victory where the French vanguard won against an Austro-Russian force under Pjotr Bagration (Russia) and Emanuel Freiherr Schustekh (Austria) on 31 October 1805 at Lambach in Öberosterreich, today Austria, during the Napoleonic Wars.