List of rulers named Wilhelm
The following rulers were called Wilhelm :
Wilhelm
- William of Holland , King (1247–1256)
- Wilhelm of Aquitaine (781–812), Duke at the time of Charlemagne, founder of the monastery and patron saint of the armory
- Wilhelm (Austria) , Duke (1386–1406)
- Wilhelm (Jülich-Geldern) , Duke of Geldern (1393–1402)
- Wilhelm (Jülich-Kleve-Berg) , the rich , Duke of Mark-Kleve (1539–1592) and Count of Nassau (1516–1559)
- Wilhelm (Saxe-Weimar) , Duke (1620–1662)
- Wilhelm (Braunschweig) , Duke (1831–1884)
- Wilhelm (Baden-Baden) , Margrave (1622–1677)
- Wilhelm (Hessen-Philippsthal-Barchfeld) (1692–1761), Landgrave of Hessen-Philippsthal-Barchfeld
- Wilhelm von Hohenzollern , Prince (1905–1927)
- Wilhelm zu Wied , 1914 Prince of Albania (1876–1945)
- Wilhelm (Schaumburg-Lippe) , Count (1724–1777)
Wilhelm I.
- Wilhelm I (German Empire) , King of Prussia (1861–1888), German Emperor (1871–1888), also Wilhelm I (Prussia)
- William I (England) , the Conqueror , King (1066-1087)
- William I (Sicily) , King (1154–1166)
- William I (Scotland) , the Lion , King (1165–1214)
- Wilhelm I (Netherlands) , King (1815–1840), also Wilhelm I (Luxembourg)
- Wilhelm I (Württemberg) , King (1816–1864)
- William I de la Roche , Duke of Athens (1280–1287)
- Wilhelm I (Bavaria) , Duke (1347–1389)
- Wilhelm I (Braunschweig-Wolfenbüttel) , Duke (1416–1482)
- Wilhelm I (Hesse) , the Elder , Landgrave (1471–1493)
- Wilhelm I (Hessen-Kassel) , Elector (1802–1806, 1813–1821)
- Wilhelm I (Nassau) , Duke (1816–1839)
- Wilhelm I (Montferrat) , margrave (890)
- William I (Provence) , the liberator , margrave (970–993)
- Wilhelm I of Champlitte , Prince of Achaea (1205–1209)
- Wilhelm I (Meißen) , the one-eyed , margrave (1349–1407)
- Wilhelm I (Orange) , the silent prince (1559–1584)
- William I (Aquitaine) , Count of Auvergne (893–918)
- Wilhelm I (Montferrat) , Count († before 933)
- William I (Normandy) , long sword , Count of Rouen († 942)
- Wilhelm I of Apulia , Count (1043-1046), see Wilhelm Eisenarm
- Wilhelm I (Besalú) the Fat , Count († 1052)
- Wilhelm I (Flanders) , Count (1127–1128)
- Wilhelm I (Jülich) , Count (1142–1176)
- Wilhelm I (Holland) , Count (1203–1222)
- Wilhelm I (Berg) , Count (1296–1308)
- Wilhelm I. (Katzenelnbogen) († 1331), Count
- Wilhelm I of Limburg-Broich , Count of Limburg (1400–1442)
- Wilhelm (Nassau) , the Rich , Count of Nassau-Dillenburg (1516–1559)
- Wilhelm I of Utrecht , Prince-Bishop (1054-1076)
- Wilhelm I of Diepholz († 1242), Bishop of Minden
- Wilhelm I von Holte , bishop and regent of Münster (1259–1260)
Wilhelm II.
- Wilhelm II (German Empire) , German Emperor and King of Prussia (1859–1941)
- William II (England) , King (1087–1100)
- William II (Sicily) , the Good , King (1166–1189)
- Wilhelm II. (Netherlands) , King (1840–1849), also Wilhelm II. (Luxembourg)
- Wilhelm II (Württemberg) , King (1891–1918)
- Wilhelm II (Hessen-Kassel) , Elector (1821–1847)
- Wilhelm II. (Weimar) , the Great , Duke of Thuringia (1002–1003)
- Wilhelm II (Apulia) , Duke (1111–1127)
- Wilhelm II (Athens) , Duke (1317-1338)
- Wilhelm II. (Braunschweig-Lüneburg) (around 1300-1369)
- Wilhelm II (Berg) , Duke (1380–1408)
- Wilhelm II (Bavaria) , Duke (1404–1417)
- Wilhelm II (Braunschweig-Calenberg-Göttingen) , Duke (1482-1491)
- Wilhelm II (Gascony) , Duke
- Wilhelm II (Hessen) , the Middle , Landgrave (1493–1509)
- Wilhelm II of Villehardouin , Prince of Achaia (1246–1278)
- Wilhelm II. (Meissen) , the Rich , Margrave (1371–1425)
- Wilhelm II (Montferrat) , Margrave (–961)
- Wilhelm II (Orange) , Prince (1647–1650)
- William II (Aquitaine) , the Younger , Count of Auvergne (918–926)
- Wilhelm II. (Provence) , the Pious , Count (994-1018), also as Wilhelm III. designated
- Wilhelm II (Burgundy) , the German , count (1105–1125)
- Wilhelm II. Embriaco (or Wilhelm II. Von Gibelet ; * before 1135, † around 1159), Lord of Gibelet in the county of Tripoli
- Wilhelm II (Henneberg-Schleusingen) , Count (1415–1444)
- Wilhelm II. (Jülich, Graf) , Graf (1176–1207)
- Wilhelm II (Flanders) , Count (1246–1251)
- Wilhelm II (Jülich) , Duke (1361–1393)
- Wilhelm II of Limburg-Broich , Count of Limburg (1459–1473)
- Wilhelm II. (Scotland) , see Wilhelm III. (Orange)
- Wilhelm II. (Holland) , see Wilhelm von Holland
- Wilhelm II. (Arles) , see Wilhelm I. (Provence)
- Wilhelm II of Bavaria , Baron von Höllinghofen († 1657), Landdrost of the Duchy of Westphalia and since 1650 Prince Abbot of Stablo and Malmedy
Church rulers:
- Wilhelm II of Lebus , bishop (1276–1282).
- Wilhelm II. Berthout , Prince-Bishop of Utrecht (1296–1301)
- Wilhelm II of Diest , Prince-Bishop of Strasbourg (1420–1439)
- Wilhelm II (Hessen-Wanfried-Rheinfels) , son of Landgrave Karl von Hessen-Wanfried (1671–1731)
- Wilhelm II. Roßhirt , Abbot of Ebrach (1773–1791)
William III.
- William III. (Sicily) , king (1194)
- William III. (Orange) , King (1689–1702)
- William III. (Netherlands) , King of the Netherlands and Grand Duke of Luxembourg (1849–1890)
- William III. (Bavaria) , Duke (1397–1435)
- William III. (Saxony) , the brave , Duke of Saxony (1445–1482)
- William III. (Hessen) , the younger , Landgrave (1483–1500)
- William III. (Montferrat) , Margrave (991-1017)
- William III. (Provence) , Margrave (1014-1037)
- William III. (Aquitaine) , Count of Poitiers (935–963)
- William III. (Weimar) ( Wilhelmi Thuringorum pretor ; 1003-1039), Count
- William III. (Toulouse) , count (1037)
- William III. (Ponthieu) , Count (1111–1172)
- William III. (Burgundy) , the child , count (1125–1127)
- William III. (Jülich) , Count (1207–1219)
- William III. (Holland) , the good , Count (1304–1337)
- William III. (Henneberg-Schleusingen) , Count (1444–1480)
- William III. von Enckenvoirt , Bishop of Utrecht (1529–1534)
William IV
- William IV (United Kingdom) , King (1830–1837)
- Wilhelm IV. (Prussia) , King (1840–1858), see Friedrich Wilhelm IV.
- William IV (Luxembourg) , Grand Duke (1905–1912)
- Wilhelm IV (Aquitaine) , Duke (963–995)
- Wilhelm IV (Bavaria) , Duke (1508–1550)
- Wilhelm IV. (Weimar) , 1046–1062 Margrave of Meissen
- William IV (Montferrat) , Margrave (-1101)
- Wilhelm IV (Hessen-Kassel) , Landgrave (1567–1592)
- William IV (Orange) , Prince (1711–1751)
- William IV (Auvergne) , Count (989-1016)
- William IV (Provence) , Count (1018-1019 / 30)
- William IV (Toulouse) , Count (~ 1061– ~ 1093)
- William IV (Burgundy) , Count (1148–1156)
- Wilhelm IV (Forcalquier) , Count (1149–1209)
- Wilhelm IV. (Jülich) , Count (1219–1278)
- William IV (Holland) , Count (1337-1345)
- Wilhelm IV. Von Eberstein , Count (1497–1562)
- Wilhelm IV von dem Bergh (1537–1586), Imperial Count von dem Bergh and governor of Gelderland and Zutphen
Wilhelm V.
- Wilhelm V (Aquitaine) , the Great , Duke (995-1030)
- Wilhelm V (Bavaria) , the Pious (1548–1626), Duke (1579–1597)
- Wilhelm V. von Jülich , Duke (1356-1361), see Wilhelm I. (Jülich)
- Wilhelm V (Hessen-Kassel) , the Steadfast , Landgrave (1627–1637)
- Wilhelm V (Orange) , Prince of Nassau-Orange (1751–1806)
- Wilhelm V (Auvergne) , Count (1032-1064)
- Wilhelm V (Montferrat) , Margrave (-1122)
- Wilhelm V (Jülich) , Count (1274–1277)
- Wilhelm V (Holland) , see Wilhelm I (Bavaria)
- Wilhelm V the Rich , Duke of Jülich-Kleve-Berg, see Wilhelm (Jülich-Kleve-Berg)
- Wilhelm V (Provence) , see Wilhelm III. (Provence)
William VI.
- William VI. (Aquitaine) , the fat , Duke (1030-1038)
- William VI. (Jülich) , Duke (1362-1393)
- William VI. (Sachsen-Weimar) , Duke (1620–1662), see Wilhelm (Sachsen-Weimar)
- William VI. (Auvergne) , Count (1096–1136)
- William VI. (Montferrat) , Margrave (–1191)
- William VI. (Hessen-Kassel) , Landgrave (1637–1663)
- William VI. (Holland) , see Wilhelm II. (Bavaria) (1404–1417)
Wilhelm VII.-IX.
- Wilhelm VII (Aquitaine) , the eagle , duke (1039-1058)
- William VII (Auvergne) , the boy , count (1143–1155)
- Wilhelm VII (Montferrat) , Margrave (1253–1290)
- Wilhelm VII (Hessen-Kassel) , Landgrave (1663–1670)
- Wilhelm VIII (Aquitaine) , Duke (1058-1086)
- William VIII (Auvergne) , the Old , Count (1155–1182)
- Wilhelm VIII (Montferrat) , Margrave (1207–1225)
- Wilhelm VIII (Hessen-Kassel) , Landgrave (1751–1760)
- Wilhelm VIII (Montpellier) , Lord (around 1172–1203)
- William IX. (Aquitaine) , the Trobador , Duke (1086–1127)
- William IX. (Auvergne) , Count (1194–1195)
- William IX. of Hessen-Kassel , see Wilhelm I. (Hessen-Kassel)
Wilhelm X. – XII.
- Wilhelm X. (Aquitaine) , Duke (1127–1137)
- Wilhelm X. (Auvergne) , Count (1224–1246)
- Wilhelm X. (Montferrat) , Margrave (1464–1483)
- Wilhelm XI. (Auvergne) , Count (1277–1279)
- Wilhelm XI. (Montferrat) , Margrave (1494–1518)
- Wilhelm XII. (Auvergne) , Count (1325-1332)
Wilhelm …
- Wilhelm August, Duke of Cumberland , Duke (1721–1765)
- Wilhelm Christoph (Hessen-Homburg) , Landgrave of Bingenheim (1648–1669)
- Wilhelm Ernst (Saxe-Weimar) , Duke (1683–1728)
- Wilhelm Ernst (Saxe-Weimar-Eisenach) , Grand Duke (1901–1918)
- Wilhelm Friedrich (Brandenburg-Ansbach) (1686–1723), Margrave of the Principality of Ansbach
- Wilhelm Friedrich (Nassau-Dietz) (1613–1664), Prince of Nassau-Dietz and governor of Friesland, Groningen and Drenthe
- Wilhelm Heinrich (Saxony-Eisenach) , Duke (1729–1741)
- Wilhelm-Jordan (Cerdanya) , Count of Tripoli (1105–1109)
- Wilhelm Malte I. Prince of Putbus (1783–1854), German Prince and Swedish Governor in Pomerania
Other ecclesiastical rulers
- Wilhelm von Mainz , Archbishop of Mainz (954–968)
- Guillaume de Chartres (also Wilhelm von Chartres, Guillielmus de Carnoto, Willemus de Carnoto; † 1218), from 1210 Grand Master of the Templar Order
- William of Tire (1175–1186), Archbishop of Tire
- Wilhelm von Saillon († 1205), bishop of Sion from 1203 to 1205
- Wilhelm of Savoy (* around 1201, † 1239), from 1224 Bishop of Valence and from 1238 until his death Bishop of Liège
- William of Ecublens († 1229), Bishop of Lausanne from 1221 to 1229
- Wilhelm von Havelberg († 1244), from 1220 to 1244 Bishop of Havelberg
- Wilhelm (Cammin) († 1253), Bishop of Cammin from 1244 to 1251
- Wilhelm von Montfort (Wilhelm I. Graf von Montfort; † 1301), from 1281 to 1301 Prince Abbot of St. Gallen
- Wilhelm von Gennep , Elector and Archbishop of Cologne (1349–1362)
- Wilhelm von Brandenburg , Archbishop and Regent of Riga (1539–1561)
- Wilhelm I. Sölner , Abbot of Ebrach Monastery (1714–1741)
- Wilhelm II. Roßhirt , abbot of Ebrach Monastery (1773–1791)
Non-rulers
- William Henry, Duke of Gloucester and Edinburgh
- William Friedrich, Duke of Gloucester and Edinburgh , (1776–1834)
- Wilhelm von Urach , Duke of Urach, Count of Württemberg (1810–1869)
- Wilhelm von Hanau-Hořovice , Prince of Hanau (1836–1902)
- Wilhelm Karl von Urach , Duke of Urach, Count of Württemberg, nominally as Mindaugas II. King of Lithuania (1865–1928)
- Wilhelm of Prussia (1882–1951) , Wilhelm III. (Hohenzollern), last Crown Prince of the German Empire and of Prussia (1882–1951)
- Willem-Alexander of Orange-Nassau (born April 27, 1967), Crown Prince
- William Mountbatten-Windsor Prince of Great Britain, 2nd in line to the throne (born June 21, 1982)
- Guillaume , Hereditary Grand Duke of Luxembourg (born November 11, 1981)