The Battle of Saalfeld took place on 10 October 1806, at which a French force of 12,800 men commanded by Marshal Jean Lannes defeated a Prussian-Saxon force of 8,300 men under Prince Louis Ferdinand. The battle took place in Thuringia in what was the Ernestine duchy of Saxe-Coburg-Saalfeld. The battle was the second clash in the Prussian Campaign of the War of the Fourth Coalition.

Saalfeld is a town in Germany, capital of the Saalfeld-Rudolstadt district of Thuringia. It is best known internationally as the ancestral seat of the Saxe-Coburg and Gotha branch of the Saxon House of Wettin.