Province of Hesse-Nassau Provinz Hessen-Nassau (German)
Province of Prussia
1868–1944
Flag Coat of arms
The Province of Hesse-Nassau (red), within the Kingdom of Prussia, within the German Empire
Capital	Kassel
Area
• 1905	15,699.3 km2 (6,061.5 sq mi)
• 1939	16,845 km2 (6,504 sq mi)
Population
• 1905	2,070,076
• 1939	2,688,922
History
• Established	1868
• Disestablished	1944
Political subdivisions	Kassel Wiesbaden
Preceded by Succeeded by Electorate of Hesse Duchy of Nassau Free City of Frankfurt Grand Duchy of Hesse Kingdom of Bavaria Province of Kurhessen Province of Nassau
Today part of	Germany

The Province of Hesse-Nassau (German: Provinz Hessen-Nassau) was a province of the Kingdom of Prussia from 1868 to 1918, then a province of the Free State of Prussia until 1944.

Hesse-Nassau was created as a consequence of the Austro-Prussian War of 1866 by combining the previously independent Hesse-Kassel (or Hesse-Cassel), the Duchy of Nassau, the Free City of Frankfurt, areas gained from the Kingdom of Bavaria, and areas gained from the Grand Duchy of Hesse (including part of the former Landgraviate of Hesse-Homburg from Hesse-Darmstadt). These regions were combined to form the province Hesse-Nassau in 1868 with its capital in Kassel and redivided into two administrative regions: Kassel and Wiesbaden. The largest part of the province surrounded the province of Upper Hesse in the Grand Duchy of Hesse (People's State of Hesse from 1918).

On 1 April 1929, the Free State of Waldeck became a part of Hesse-Nassau after a popular vote, becoming part of the Kassel administrative region.

In 1935, the Nazi government de facto abolished all states, so the provinces held little meaning. Nevertheless, effective 1 July 1944, Hesse-Nassau was split into the provinces of Kurhessen (capital in Kassel) and Nassau (capital in Wiesbaden). In 1945, after the end of World War II, these two provinces were re-merged and combined with most of the neighbouring People's State of Hesse to form Greater Hesse, which became the modern state of Hesse in 1946. Parts of Nassau were also moved into the Rhineland-Palatinate.

Oberpräsidents

The Oberpräsident (or "High Commissioner") was the chief administrator of a Prussian province, appointed by the King on the advice of the Prussian Minister for the Interior. The Oberpräsident administered the province with the assistance of a Prussian government-appointed provincial council.

Oberpräsidenten for the Province of Hesse-Nassau
	Name	Image	Born-Died	Party affiliation	Start of Tenure	End of Tenure
	Eduard von Möller		1814–1880		1867	1871:
	Ludwig von Bodelschwingh		1811–1879		1872	1875
	August von Ende		1815–1889	DRP	1876	1881
	Botho zu Eulenburg		1831–1912	DkP	1881	1892
	Eduard von Magdeburg		1844–1932		1892	1898
	Robert von Zedlitz-Trützschler		1837–1914		1898	1903
	Ludwig von Windheim		1857–1935		1903	1907
	Wilhelm Hengstenberg				1907	1917
	August von Trott zu Solz		1855–1938		1917	1919
	Rudolf Schwander		1868–1950		1919	1930
	August Haas		1881–1945	SDP	1930	1932
	Ernst von Hülsen		1875–1950		1932	1933
	Philipp von Hessen		1896–1980	Nazi	1933	1943
	Ernst Beckmann		1893–1957	Nazi	1943	1944

Insignia

The flag of Hesse-Nassau is identical to that of the Netherlands. The Dutch royal house originates from the Duchy of Nassau.

The coat of arms is split into three parts, each part showing the coats of arms for the three entities that formed Hesse-Nassau:

• a crowned, silver/red-striped lion on a blue background (Electorate of Hesse)
• a crowned, golden lion on a blue field strewn with billets (Duchy of Nassau)
• a silver eagle with golden talons on a red background (Free City of Frankfurt)

Hesse-Nassau in 1905