Oldenburg

Oldenburg may refer to:

Places

Oldenburg in Oldenburg, a city in Lower Saxony, Germany
- Oldenburg (district), a district bordering the city
- Carl von Ossietzky University of Oldenburg, a university in the city
Oldenburg in Holstein, a town in Schleswig-Holstein, Germany
- Oldenburg-Land, an association of municipalities bordering the town
Oldenburg, Indiana, a town in the United States
Oldenburg, Texas, a settlement in the United States
Mount Oldenburg, Ellsworth Land, Antarctica

Bishopric of Oldenburg (970–1160), a bishopric that became the Prince-bishopric of Lübeck, now in Schleswig-Holstein
County of Oldenburg (1091–1774), a state of the Holy Roman Empire, now in Lower Saxony
Duchy of Oldenburg (1774–1810), a state of the Holy Roman Empire
Grand Duchy of Oldenburg (1814–1918), a state of the German Confederation and Empire
Free State of Oldenburg (1918–1946), a state of the Weimar Republic and Nazi Germany
Oldenburg Land, a historical region in Lower Saxony, covering the former free state

Claes Oldenburg (1929–2022), Swedish-American sculptor
Henry Oldenburg (c. 1619–1677), German diplomat and the first Secretary of the Royal Society
Jen Flynn Oldenburg (born 1978), American volleyball player and coach
Ray Oldenburg (1932–2022), American urban sociologist
Sergei Oldenburg (1863–1934), Russian ethnographer and politician
Wilbrand van Oldenburg (before 1180–1233), a bishop of Paderborn and of Utrecht