Louis I (German: Ludwig; 6 February 1402 – 17 January 1458), nicknamed the Peaceful (German: der Friedsame), was Landgrave of Hesse from 1413 to 1458.

[1][2] Following Louis' death, his sons, Henry III and Louis II, divided Hesse into Upper and Lower sections.

[3][4] Louis was born at Spangenberg, the son of Hermann II, Landgrave of Hesse, and Margaret, the daughter of Frederick V of Nuremberg.

After 1425 a conflict with the Electorate of Mainz over claims to power in Hesse broke out into open conflict and Archbishop Conrad III of Mainz suffered a decisive defeat at Fulda in 1427.

This article about a member of the German nobility is a stub.