Counts, dukes and grand dukes of Oldenburg

Counts of Oldenburg

• 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
• 1345–1368 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, in personal union as Christian I King of Denmark
• 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
• 1670–1699 Christian VIII, in personal union as Christian V King of Denmark
• 1699–1730 Frederick II, in personal union as Frederick IV King of Denmark
• 1730–1746 Christian IX, in personal union as Christian VI King of Denmark
• 1746–1766 Frederick III, in personal union as Frederick V King of Denmark
• 1766–1773 Christian X, in personal union as Christian VII King of Denmark, 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, in personal union Prince-Bishop of Lübeck

  Dukes of Oldenburg

Grand Dukes of Oldenburg

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

  Heads of the Grand Ducal Family of Oldenburg since 1918 (not ruling)

• Frederick Augustus II, former Grand Duke, Head of House 1900-1931
• * Nikolaus, Duke 1931-1970
• ** Anton Günther, Duke 1970-2014
• *** Christian, Duke 2014–present
• **** Duke Alexander, heir apparent
• **** Duke Philipp
• **** Duke Anton Friedrich
• ** Duke Peter
• *** Duke Friedrich August
• *** Duke Nikolaus
• **** Duke Christoph
• **** Duke Georg
• **** Duke Oscar
• *** Duke Georg Moritz
• ** Duke Friedrich August
• *** Duke Paul-Wladimir
• **** Duke Kirill
• **** Duke Carlos
• **** Duke Paul
• ** Duke Huno
• ** Duke Johann
• *** Duke Konstantin Nikolaus

  Prime Ministers of the Republic of Oldenburg

• 1918–1919 Bernhard Kuhnt
• 1919–1923 Theodor Tantzen
• 1923–1930 Eugen von Finckh
• 1930–1932 Friedrich Cassebohm
• 1932–1933 Carl Röver
• 1933–1945 Georg Joel
• 1945–1946 Theodor Tantzen