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

Counts of Oldenburg

Dukes of Oldenburg

1774–6 July 1785 Gottorp, Schleswig son of Christian August of Holstein-Gottorp and Albertina Frederica Kassel 21 November 1752 three children Oldenburg aged 73 1785–1810 Eutin son of Frederick August I and Ulrike Schloss Plön aged 69 1813–2 July 1823 Eutin son of Frederick Augustus I and Ulrike Schloss Plön aged 69

Grand Dukes of Oldenburg

1823–21 May 1829 Rastede nephew of Frederick Augustus I and cousin of William 6 June 1781 two children Oldenburg aged 74 1829–27 February 1853 Rastede son of Peter I and Friederike 24 July 1817 two children Ida of Anhalt-Bernburg-Schaumburg-Hoym 24 June 1825 one child Cecilia of Sweden 5 May 1831 three children Oldenburg aged 69 1853–13 June 1900 Oldenburg son of Augustus I and Ida 10 February 1852 two children Rastede aged 72 1900–11 November 1918 Oldenburg son of Peter II and Elisabeth 18 February 1878 two children Elisabeth of Mecklenburg-Schwerin 24 October 1896 5 children Rastede aged 78

Full style

Prime ministers of the Republic of Oldenburg