- 984-991: Theophanu, Regent of the Empire & Germany
- 983, 991-995: Adelaide of Italy, Viceroy of Italy, 983, for her son Otto II, Holy Roman Emperor; Regent of the Empire [1]
- 1042-?: Henry Raspe, Landgrave of Thuringia
- 1024-?: Kunigunde of Luxemburg (980-1033), Regent of Germany until the election of Conrad II. [2]
- 1225-1228: Louis I of Bavaria (1174-1231), Regent for Frederick II
- 1212-1220: Constance of Aragon, Regent of Germany for her husband, Frederick II, Holy Roman Emperor, during his absence from Germany.
- 1680-1702: Charlotte Amelie de la Tremoille (1652-1732), Regent of Aldenburg and Knyphausen for her son, Anton II, who was only 3 months old when her husband, Anton of Aldenburg (1633-81) died
- 1738-1754: Baroness Charlotte Sophie (1715-1800), Regent of Aldenburg and Knyphausen for Anton II
- 1738-1754: William, Count of Bentinck and Aldenburg, Regent of Aldenburg and Knyphausen for Anton II
- 1266-1270: Mechtild of Brunswick-Lunenburg (1230-98), Regent for her sons Otto I and Henry III of Anhalt-Aschersleben
- 1516-1522: Margaret of Munsterberg (1473-1530), Regent for her son John II of Anhalt-Dessau (1504-1551)
- 1670-1691: Anna Eleonore of Stolberg-Wernigerode (1651-91), Regent for her posthumous son, Emmanuel Albrecht of Anhalt-Kothen (1671-1704)
- 1667-1674: Sophie Auguste of Holstein-Gottorp (1630-80), Regent for her son, Charles William of Anhalt-Zerbst.
- Augustus of Anhalt-Kothen-Plotzkau (1575-1653), Regent for his nephew, John of Anhalt-Zerbst
- 1693-1708: Henriette Katharina of Orange-Nassau (1676-1747), Regent for her son Leopold I of Anhalt-Dessau
- 1704-1715: Gisela Agnes of Rath (1670-1740), Regent for her son Leopold (1694-1728), Prince of Anhalt-Kothen, 1704-28.
- 1747-1752: Johanna Elisabeth of Holstein-Gottorp (1712-60), Regent for her son Friedrich August of Anhalt-Zerbst
- 1855-1863: Leopold Frederick of Anhalt-Dessau, Regent for Alexander IV of Anhalt-Bernburg
- 1918: Prince Aribert (1864-1933), Regent of Anhalt
- Christiane Charlotte of Wurttemberg (1694-1729), Princess-Regent of Ansbach, 1723-1729, for Karl Wilhelm Friedrich
- Charles Augustus of Hardenberg (1750-1822), Regent of Ansbach, 1791-1792
- 1570: Jakoba of Bavaria, Regent of Baden-Baden for her great-grandson Philip II, Margrave of Baden-Baden, 1569-99
- 1702-1727: Sibylla Augusta of Saxe-Lauenburg (1675-1733), Regent of Baden-Baden
- 1707-1727: Franziska Sibylla Augusta of Saxe-Lauenburg (1675-1733), Regent of Baden-Baden for Ludwig Georg Simpert
- 1707-1716: John William of the Palatinate (1658-1716), Regent of Baden-Baden for Ludwig Georg Simpert
- 1716-1727: Leopold of Lorraine (167_-1729), Regent of Baden-Baden for Ludwig Georg Simpert
- 1738-1742: Magdalene Wilhelmine of Wurttemberg (1677-1742), Regent of Baden-Hochberg-Durlach for her grandson, Charles IV Frederick of Baden-Hochbeg zu Durlach.
- 1738-1746: Charles Augustus of Baden-Durlach (1712-86), Regent of Baden-Durlach
- 1742-1746: Charles William Eugene of Baden-Durlach (1728-1811), Regent of Baden-Durlach
- 1852-1856: Friedrich I of Baden (1826-1907), Regent of Baden for Ludwig II
- 1886-1912: Luitpold of Bavaria (1821-1912), Regent of Bavaria for his nephew Ludwig II who was declared mentally incompetent and who died mysteriously, and for Ludwig II‘s brother, King Otto, who was also insane
- 1912-1913: Ludwig III of Bavaria, Regent of Bavaria for his insane cousin, King Otto. He then became King of Bavaria, 1913-1921
- 1527-?: George of Ansbach, Regent of Bayreuth for his nephew Albrecht Alcibiades, Margrave of Bayreuth.
- 1454-1467: Gerhard of Keppel, Regent of Bentheim-Benthein for Bernhard II who was only 12 years old when he succeeded his father.
- 1466-1473: Bernhard II of Bentheim-Bentheim (1442-73), Regent of Bentheim-Steinfurt for Eberwin II of Bentheim-Steinfurt
- 1553-1563: Walburga of Brederode, Regent for her son Arnold III of Bentheim-Steinfurt
- 1562-1573: Anna of Tecklenburg-Schwerin (1532-1582), Regent for her son, Arnold IV of Bentheim-Steinfurt, who was only 8 years old when his father died.
- 1220-1225: Mathilde of Landsberg (d.1255), Regent of Brandenburg for her son, John I of Brandenburg I
- 1373-1375: Charles IV, Holy Roman Emperor
- 1470: John Cicero, Elector of Brandenburg Regent of Brandenburg
- Conrad, Bishop of Verden, Regent for Albert II of Brunswick-Gottingen (1268-1318)
- 1540-1545: Elisabeth of Brandenburg (1510-58), Regent Brunswick-Wolfenbuttel-Kalenberg (jointly with Philipp of Hesse), for her son Eric II
- Philip of Hesse, Regent of Brunswick-Wolfenbuttel-Kalenberg for Eric II
- 1805-1806: Charles William Ferdinand of Brunswick (1735-1806), Regent of Brunswick
- 1885-1906: Albert of Prussia (1837-1906), Regent of Brunswick
- 1907-1913: Johann Albrecht of Mecklenburg-Schwerin (1857-1920), Regent of Brunswick
- Heinrich of Brunswick-Luneburg, Regent of Brunswick-Gottingen for Albert II of Duke of Brunswick-Gottingen
- Ferdinand of Courland (1655-1737), Regent of Clourland and Semgallen, 1698-1709, for Frederick William
- Elisabeth Sophie of Brandenburg (1674-1748), Regent of Courland, 1701-09, for Frederick William
- Anna Ioannovna of Russia (1693-1740), Regent of Courland, 1711-1730, for Ferdinand
- Moritz of Saxony (1696-1750), Regent of Coutland, 1726-1727
- Christoph Friedrich von der Osten gen. Sacken-Appricken (1697-1759), Regent of Courland, May-Jul, 1737, 1740-1758
- Heinrich Christian von Hoffenberg (1696-1781), Regent of Kurland, Jan-Feb, 1763
- Carl Ferdinand von Orgies, gen. Rutenberg (1741-1801), Regent of Kurland, Mar-Apr, 1795
- 1391-1409: Foelkeldis the Malicious Regent for Keno II of East Frisia. [4]
- 1466-1491: Theda Ukena, Regent for her son Enno I of East Frisia [5]
- 1491-1494: Theda Ukena, Regent for her second son Edzard I of East Frisia. [6]
- 1540-1565: Anna of Oldenburg, Regent for Edzard II of East Frisia. [7] [8]
- 1648-1651: Juliana of Hesse, Regent for Enno Ludwig of East Frisia. [9]
- 1665-1668: Edzard Ferdinand of East Frisia, Regent for Christian Eberhard of East Frisia. [10]
- 1665-1690: Christine Charlotte of Wurttemberg, Regent fo Christian Eberhard of East Frisia. [11]
- 1439-1496: Catherine of Egmont, Regent [12]
- 1730-1751: William VIII of Hesse (1682-1760), Regent for Frederick I of Hesse
- 1509-1518: Anna of Mecklenburg, Regent for her son, Philip I of Hesse, who was only 5 years old when he succeeded his father William II of Hesse. []
- 1637-1650: Amalie Elisabeth of Hanau, Regent of Hesse-Kassel
- 1663-1677: Hedwig Sophie of Brandenburg, Regent of Hesse-Kassel for Charles
- 1831-1847: Frederick William I of Hesse-Kassel (1802-75), Regent of Hesse-Kassel for William II before he succeeded him.
- 1404-?: Elisabeth of Brunswick, Regent of Holstein for her son, Henry IV, Duke of Holstein
- 1404-?: Henry, Bishop of Osnabruck, Regent of Holstein for Henry IV of Holstein
- 1754-1759: Friedrich Ernst of Isenburg-Birstein, Regent of Isenburg-Birstein
- 1738-1754: William (1704-44), Count of Bentinck and Aldenburg, Regent of Knyphausen and Aldenburg (jointly with Baroness Charlotte Sophie) for Anton II.
- 1768-1783: Marie Katharina von Tuyll (1743-98), Regent of Knyphausen and Aldenburg for William II Gustav Frederick
- 1726-1738: Margareta Christiana Augusta, Grafin von Gyldenlov-Danneskiold (1694-1761), Regent of Neu-Leiningen for George Charles I Augustus Louis
- 1751-1758: Charlotte Wilhelmine of Pappenheim (1708-1792), Regent for her son, Christian John (1730-70), Count of Leiningen-Westerburg and Alt-Leiningen, 1751-70
- 1618-1654: Johanetta Elizabeth of Nassau-Siegen (1593-1654), Regent after husband's death.
- 1734-1737: Johanette Wilhelmine of Nassau-Idstein, Regent of Lippe [14]
- 1782-1789: Ludwig Adolf of Lippe (1732-1800), Regent of Lippe for Simon Augustus
- 1802-1820: Pauline of Anhalt-Bernburg (1769-1820), Regent of Lippe for Leopold II
- 1895-1897: Adolf of Schaumburg-Lippe (1859-1916), Regent of Lippe for Alexander
- 1897-1904: Ernest of Lippe-Biesterfeld (1842-1904), Regent of Lippe for Alexander
- 1904-1905: Leopold of Lippe-Biesterfeld (1871-1949), Regent of Lippe for Alexander
- 1705-1706: Charles of Denmark (1680-1729), Regent of the Prince-Bishopric of Lubeck
- 1272-1287: Anastasia of Pomerania, Regent of Mecklenburg
- 1897-1901: Johann Albrecht of Mecklenburg-Schwerin (1857-1920), Regent of Mecklenburg-Schwerin for Friedrich Franz IV
- 1068-1074: Dedo II (1010-75), Margrave of the Ostmark (Lower Lusatia), 1046-75. Regent in Meissen
- 1221-1227: Louis IV of Thuringia (d.1227), Regent of Meissen for his nephew, Henry III of Thuringia
- Charlotte Amalia of Nassau-Dillenburg (1680-1738), Regent of Nassau-Usingen, 1718-1738, for Karl, Prince of Nassau-Usingen, 1718-75
- Peter Friedrich Ludwig of Oldenburg (1755-1829), Regent of Oldenburg, 1785-1806, 1807-10, 1813-1823, for Wilhelm who was insane. [15] He became Duke of Oldenburg, as Peter I, 1823-29.
- 1829: Augustus of Oldenburg (1783-1853), Regent of Oldenburg for Peter I
- George of Brunswick-Luneburg, Regent of the Prince-Bishopric of Osnabruck, 1761-64.
Palatinate of the Rhine
edit- Frederick I of the Palatinate (1425-76), Regent of the Palatinate, 1449-1452.
- Caroline of Nassau-Saarbrucken (1704-74), Regent of the Palatinate-Zweibrucken-Birkenfeld, 1735-1740, for Christian IV
- 1219-1221: Ingard (d. after 1236), possibly a princess of Denmark; wife of Casimir II (1180-1220), Duke of Pomerania-Demmin; Regent for their son, Wartislaw III (1210-64)
- 1220-1233: Miroslawa of Pomerelia (d.1233), Regent of Pomerania for her son Barnim I of Pomerania-Wolgast (1219-64)
- 1326-?: Otto I of Pomerania-Stettin, Regent for Bogislaw V of Pomerania-Wolgast who was only 8 years old when he succeeded his father Wartislaw IV of Pomerania-Wolgast [16] [17]
- 1326-?: Barnim III of Pomerania-Stettin, Regent for Bogislaw V of Pomerania-Wolgast who was only 8 years old when he succeeded his father Wartislaw IV of Pomerania-Wolgast [18] [19]
- 1858-1861: William I of Prussia , Regent of Prussia for his brother Frederick William IV of Prussia who had suffered from a stroke and become mentally disable for the rest of his life. Wilhelm succeeded as King of Prussia after his brother’s death.
- Rupert, Regent of Ravensberg, 1389-1395
- Adolf, Regent of Ravensberg, 1395-1402
- William, Regent of Ravensberg, 1402-1428
- 1697-1717: Henriette Amalie, Baroness of Friesen (1668-1732), Regent of Reuss-Obergreiz for Heinrich II
- 1859-1867: Caroline (1819-72), Regent of Reuss-Greiz for Henrey XII
- 1908-1918: Heny XXVII of Reuss (1858-1928), Regent of Reuss-Greiz
- 1722-1723: Sophie Charlotte, Countess of Bothmer (1697-1748), Regent of Reuss-Obergreiz for Henry IX
- 1723-1743: Sophie Charlotte, Countess of Bothmer (1697-1748), Regent of Reuss-Obergreiz for Henry XI
- 1565-1576: Agnes of Bentheim-Steinfurt (1531-89), Regent of Rietberg for her daughter Walpurgis (1556-86)
- 1693: Anna Katharina of Nassau (1653-1731), Regent of Salm-Dhaun for Karl
- Jul-Oct, 1727: Anna Franziska of Thurn und Taxis (1683-1776), Regent of Salm-Reifferscheid zu Dyck for Franz Ernst
- 1750: Caroline Friederika of Salm (1733-1783), Countess-Regent of Salm-Dhaun for Charles Leopold Louis & for Frederick William
- 1733-1738: Louise of Nassau (1686-1773), Regent of Salm-Dhaun for John Philip II
- 1775-1776: Augusta of Waldburg-Zeil-Wurzach (1743-1776), Regent of Salm-Reifferscheid zu Dyck for Joseph Franz Maria
- 1778-1783: Wilhelm Florentine Johann Felix (1745-1810), Bishop of Doornik; Regent of Salm-Salm (jointly with Marie Louise Eleonore of Hesse), for Konstantine Alexander Joseph
- 1799-1801: Friederike of Sayn-Wittgenstein-Hohenstein (1767-1849), Regent of Salm-Grumbach for Wilhelm Friedrich Karl August
- Ernestine Barbara Dorothea Sibylle of Lowenstein-Wertheim-Rochefort (1654-98), Regent of Salm-Reifferscheid, for Franz Wilhelm I.
- 1755-1756: Maria Franziska, Countess Ezterhazy (1702-78), Regent of Salm-Reifferscheid in Bedbur for Sigismund
- 1773-1778: Marie Louise Eleonore of Hesse (1745-1810), Regent of Salm-Salm for Louis Otto Charles
- 1778-1783: Marie Louise Eleonore of Hesse (1745-1810), Regent of Salm-Salm for Constantine Alexander Joseph
- 1900-1905: Erndst of Hohenlohe-Langenberg (1863-1950), Regent of Saxe-Coburg and Gotha
- 1758-1775: Anna Amalia of Brunswick-Wolfenbuttel, Regent of Saxe-Eisenach for her infant son, Charles Augustus (1757-1828). [20]
- 1763-1782: Charlotte Amalie of Hesse-Philippsthal, Regent of Saxe-Meiningen for her son August Frederick Karl Wilhelm, Duke of Saxe-Meiningen [21]
- 1803-1821: Louise Eleonore of Hohenlohe-Langenburg, Regent for her infant son, Bernhard II of Saxe-Meiningen. [22]
- 1758-1775: Anna Amalia of Brunswick-Wolfenbuttel, Regent for her infant son, Charles Augustus (1757-1828). [23]
- George of Saxony (1471-1539), Duke of Saxony, 1500-39. As early as 1488, when his father, Albrecht the Brave, was in Friesland fighting on behalf of the emperor, George was regent of the ducal possessions, which included the Margraviate of Meissen with the cities of Dresden and Leipzig. When regent, during the lifetime of his father, the difficulties arising from conflicting interests and the large demands on his powers had often brought the young prince to the verge of despair.
- 1694-1708: Hedwig Sophie of Lippe-Brake (1669-1738), Regent of Sayn-Wittgenstein-Berleburg for Casimir
- 1787-1799: Juliane Wilhelmine Louise of Hesse-Philippsthal, Regent of Schaumburg-Lippe (Joint) for her son, Georg I Wilhelm [24]
- 1787-1807: Johann Ludwig of Wallmoden-Gimborn, Regent of Schaumburg-Lippe (Joint) for Georg I Wilhelm [25]
- 1702-1718: Christian Augustus of Schleswig-Holstein-Gottorp (1673-1726), Duke-Regent of Schleswig-Holstein-Gottorp for Charles Frederick
- 1739-1745: Adolf Frederick, Bishop of Lubeck (1701-1771), Regent of Schleswig-Holstein-Gottorp
- 1745-1751: Frederick Augustus of Schleswig-Holstein-Gottorp (1711-85), Regent of Schleswig-Holstein-Gottorp for Karl Peter Ulrich.
- 1751-1763: Georg Ludwig (1719-63), Duke-Regent of Schleswig-Holstein-Gottorp for Paul, later Paul I of Russia.
- 1855-1863: Friederike of Schleswig-Holstein-Sonderburg-Beck (1811-1902), Regent (co-regent with Leopold Friedrich of Anhalt-Dessau), for her husband, Alexander IV (1815-68), who was mentally deficient.
- 1807-1814: Louis Caroline of Hesse-Homburg, Regent for her son, Frederick Gunther I, who was a minor when he succeeded. [26]
- 1566-1572: Anna of Tecklenburg-Schwerin (1532-82), Regent of of Steinfurt
- 1713-1728: Isabella Justina of Hoorn, Regent for Frederick Belgicus Charles of Bentheim-Steinfurt who was 10 years old when his father died.
- 1015-1030: Gisela of Swabia, Regent for her son, Ernest II, Duke of Swabia, who was a minor and continued as regent after her son was imprisoned by Gisela‘s second husband, Conrad II, Holy Roman Emperor.
- Poppo, Archbishop of Trier, Regent of Swabia, ?, for Ernest II.
- 1202-1206: Oda of Altena, Regent of Tecklenburg for her son Otto (d.1263).
- 1227-1230: Albert II of Brandenburg, Regent of Thuringia Henry III of Thuringia, 1221-1288
- 1763-1766: Christiane Henriette of Birkenfeld (1725-1816), Regent of Waldeck-Pyrmont for Friedrich I
- 1845-1852: Emma of Anhalt-Bernburg-Schaumburg-Hoym (1802-58), Regent of Waldeck and Pyrmont
- 1525-1531: Ulrich X of Helfenstein-Wiesensteig )1486-1548), Regent of Wurttemberg [27]
- 1677-1693: Frederick Charles of Wurttemberg-Winnetka (d.1698), Regent of Wurttemberg & Teck
- 1737-1738: Charles Rudolf of Wurttemberg-Nested (1667-1742), Duke-Regent of Wurttemberg & Teck for Charles Eugene
- 1738-1744: Charles Frederick of Wurttemberg-Oels (1690-1761), Duke-Regent of Wurttemberg & Teck for Charles Eugene