# Counts, dukes and grand dukes of Oldenburg

This is a list of the counts, dukes, grand dukes, and prime ministers of Oldenburg.

## Counts of Oldenburg

* 1088/1101–1108 Elimar I
* 1108–1143 Elimar II
* 1143–1168 Christian I the Quarrelsome
* 1168–1211 Maurice I
* 1209–1251 Otto I, joint rule with Christian II and later with John I
* 1211–1233 Christian II
* 1233–1272 John I
* 1272–1278 Christian III
* 1272–1301 Otto II, Count of Oldenburg-Delmenhorst
* 1278–1305 John II
* 1302–1323 Christian IV
* 1305–1345 John III
* 1331–1356 John IV
* 1345–1347 Conrad I
* 1368–1386 Conrad II
* 1386–1420 Maurice II
* 1368–1398 Christian V
* 1398–1423 Christian VI
* 1423–1440 Dietrich the Lucky
* 1440–1448 Christian VII
* 1448–1483 Gerhard VI "the Quarrelsome"
* 1483–1500 Adolph, Count of Oldenburg-Delmenhorst
* 1500–1526 John V
* 1526–1529 John VI, joint rule with his brothers George, Christopher and Anthony I, forced to resign in 1529
* 1526–1529 George, joint rule with his brothers John VI, Christopher and Anthony I, forced to resign in 1529
* 1526–1566 Christopher, joint rule with his brothers John VI, George and Anthony I
* 1526–1573 Anthony I, joint rule with his brothers John VI, George and Christopher
* 1573–1603 John VII
* 1573–1619 Anthony II, Count of Oldenburg-Delmenhorst
* 1603–1667 Anthony Günther
* 1667–1670 Frederick I, in personal union as Frederick III King of Denmark-Norway
* 1670–1699 Christian VIII, in personal union as Christian V King of Denmark-Norway
* 1699–1730 Frederick II, in personal union as Frederick IV King of Denmark-Norway
* 1730–1746 Christian IX, in personal union as Christian VI King of Denmark-Norway
* 1746–1766 Frederick III, in personal union as Frederick V King of Denmark-Norway
* 1766–1773 Christian X, in personal union as Christian VII King of Denmark-Norway, ceded the county to the Holstein-Gottorp line
* 1773 Paul I, ceded the county to his cousin of the Holstein-Gottorp line
* 1773–1774 Frederick Augustus I (elevated to Duke in 1774), in personal union Prince-Bishop of Lübeck

## Dukes of Oldenburg

| Name | Portrait | Birth | Marriage(s) | Death |
| Frederick Augustus I 1774–6 July 1785 | | 20 September 1711 Gottorp, Schleswig son of Christian August of Holstein-Gottorp and Albertina Frederica | Ulrike Friederike Wilhelmine of Hesse-Kassel Kassel 21 November 1752 three children | 6 July 1785 Oldenburg aged 73 |
| William I 1785–1810 | | 3 January 1754 Eutin son of Frederick August I and Ulrike | Never married | 2 July 1823 Schloss Plön aged 69 |
    To France in 1810–1813
| Name | Portrait | Birth | Marriage(s) | Death |
| William I 1813–1815 | | 3 January 1754 Eutin son of Frederick Augustus I and Ulrike | Never married | 2 July 1823 Schloss Plön aged 69 |

## Grand Dukes of Oldenburg

| Name | Birth | Marriage(s) | Death |
| William I 1815–2 July 1823 | 3 January 1754 Eutin son of Frederick Augustus I and Ulrike | Never married | 2 July 1823 Schloss Plön aged 69 |
| Peter I 1823–21 May 1829 | 17 January 1755 Rastede nephew of Frederick Augustus I and cousin of William | Frederica of Württemberg 6 June 1781 two children | 21 May 1829 Oldenburg aged 74 |
| Augustus I 1829–27 February 1853 | 13 July 1783 Rastede son of Peter I and Friederike | Adelheid of Anhalt-Bernburg-Schaumburg-Hoym 24 July 1817 two children Ida of Anhalt-Bernburg-Schaumburg-Hoym 24 June 1825 one child Cecilia of Sweden 5 May 1831 three children | 27 February 1853 Oldenburg aged 69 |
| Peter II 1853–13 June 1900 | 8 July 1827 Oldenburg son of Augustus I and Ida | Elisabeth of Saxe-Altenburg 10 February 1852 two children | 13 June 1900 Rastede aged 72 |
| Frederick Augustus II 1900–11 November 1918 | 16 November 1852 Oldenburg son of Peter II and Elisabeth | Elisabeth Anna of Prussia 18 February 1878 two children Elisabeth of Mecklenburg-Schwerin 24 October 1896 5 children | 24 February 1931 Rastede aged 78 |

## Full style

* Grand Duke of Oldenburg, Heir in Norway, Duke of Schleswig, Holstein, Stormarn, Ditmarshes & Oldenburg, Prince of Lübeck and Birkenfeld, Lord of Jever and Kniphausen

## Prime ministers of the Republic of Oldenburg

* 1918–1919 Bernhard Kuhnt (USPD)
* 1919–1923 Theodor Tantzen (DDP)
* 1923–1930 Eugen von Finckh (no party)
* 1930–1932 Friedrich Cassebohm
* 1932–1933 Carl Röver (NSDAP)
* 1933–1945 Georg Joel (NSDAP)
* 1945–1946 Theodor Tantzen (FDP)
    To Lower Saxony in 1946