Landgraviate of Hesse-Darmstadt

Landgraviate of Hesse-Darmstadt Landgrafschaft Hessen-Darmstadt (German)
1567–1806
Military banner (1756–1763) Coat of arms (1736–1804)
Hesse-Darmstadt (HD) and Hesse-Kassel (HK) in 1789
Status	State of the Holy Roman Empire
Capital	Darmstadt
Common languages	Hessian
Religion	Lutheran
Government	Monarchy
Landgrave of Hesse-Darmstadt
• 1567–1596	George I
• 1596–1626	Louis V
• 1626–1661	George II
• 1661–1678	Louis VI
• 1678	Louis VII
• 1678–1739	Ernest Louis
• 1739–1768	Louis VIII
• 1768–1790	Louis IX
• 1790–1806	Louis X
Historical era	Napoleonic Wars
• Established	1567
• Grand Duchy	1806
Preceded by Succeeded by Landgraviate of Hesse Grand Duchy of Hesse

The Landgraviate of Hesse-Darmstadt (German: Landgrafschaft Hessen-Darmstadt) was a State of the Holy Roman Empire, ruled by a younger branch of the House of Hesse. It was formed in 1567 following the division of the Landgraviate of Hesse among the four sons of Landgrave Philip I.

The residence of the landgraves was in Darmstadt, hence the name. As a result of the Napoleonic Wars, the landgraviate was elevated to the Grand Duchy of Hesse following the Empire's dissolution in 1806.