List of nicknames of European royalty and nobility: W-Z
- Waldemar, Margrave of Brandenburg-Stendal the Great
- Waleran, Duke of Lower Lorraine the Pagan
- Wallis, The Duchess of Windsor the Woman I Love 1, the Lowest of the Low 2
- Walter IV of Brienne the Great
- Walter fitz Alan the Steward
- Walter Raleigh the Knight of the Cloak
- Walter Scott, 1st Lord Scott of Buccleuch Bold Buccleuch
- Walter Stewart, 3rd High Steward of Scotland the Steward
- Walter Stewart, Earl of Menteith the Freckled 3
- Waltheof, 1st Earl of Northampton the Saint
- Wartislaw V, Duke of Pomerania-Wolgast Pater Noster 4
- Welf II of Bavaria the Fat
- Wenceslas Adam of Silesia the Posthumous
- Wenceslaus I, Duke of Bohemia the Saint, the Sleeper, the Sleeping Hero, the Sleeping King, Good King Wenceslas
- Wenceslaus I, King of Bohemia the Blind
- Wenceslaus II, King of Bohemia the Pious
- Wenceslaus III of Bohemia the Younger
- Wenceslaus, King of the Romans Wenceslaus of Luxemburg, the Lazy 5, the Drunkard 6, the Sardanapalus of Germany 7
- Wentworth Beaumont Bonny Boy Beaumont 8
- Wenzel Anton Graf Kaunitz the Wily Chancellor 9
- Werner I the Pious, the Pompous
- Werner V of Zimmern (1290–1384) the Posthumous
- Wifred the Hairy
- Wilhelm I of Germany the Cartridge Prince 10
- Wilhelm, Duke of Jülich-Cleves-Berg the Rich
- Wigstan of Mercia the Saint
- Wilhelm II of Germany Our Fritz
- William I, German Emperor Kaiser Tartuffe 11, the Prince of Grapeshot
- William I of England William the Conqueror, William the [...]
- William I of Scotland William the Lion 12 13, the Rough 14
- William I, Count of Aumale the Fat 15
- William I, Count of Auvergne, 841–846 the Lion
- William I, Count of Burgundy the Great
- William I, Count of Hainaut the Father-in-law of Europe
- William I, Count of Mello (1163-1248) the Younger
- William I, Count of Namur, 1337–1391 the Rich
- William I, Count of Provence, 968–993 the Father of the Country, the Liberator
- William I, Duke of Bavaria the Mad Count
- William I, Duke of Luneburg (1184–1213), the Fat, the Old
- William I, Landgrave of Hesse the Elder
- Guillaume V of Chalon, Count of Auxerre (d.1304) the Great
- William I of England the [...]
- William I of Nassau-Dillenburg the Old, the Rich
- William I of the Netherlands the Copper King, the Enlightened Despot, the King-Merchant, the Merchant King 16 17 18
- William I of Normandy Longsword 19, the Long-Armed
- William I of Solm-Greifenstein (1592–1635) the Elder
- William I of Sicily the Bad
- William I of Thuringia the Rich
- William I Talvas
- William II, German Emperor Kaiser Bill
- William II, Count of Alencon Talvas
- William II, Count of Angouleme (978–1028) Taillefer
- William II, Count of Burgundy the German
- William II, Count of Julich, 1176–1207 the Great
- William II, Landgrave of Hesse the Intermediate, the Younger
- William II, Lord of Bethune the Red 20
- William II, Viscount of Marseilles the Fat 21
- William II of Aquitaine the Younger
- William II of England William Rufus, the Herdsman of Wild Beasts, the Wood-keeper 22
- William II of the Netherlands the Young Frog, the Little Frog" 23 24,the Hero of Waterloo"
- William II of Sicily the Good
- William II of Solm-Greifenstein (1635–1676) the Younger
- William II of Weimar the Great 25
- William II de la Marck the King of the Sea Beggars 26
- William III, Landgrave of Thuringia, 1445–1482 the Brave
- William III, Landgrave of Upper Hesse, 1483-1500 the Younger
- William III of Aquitaine the Towhead, the Burlap-Head, Tête d'Étoupe, the Pious
- William III of Brunswick the Elder
- William III of England Dutch William 27, King Billy, Mr. Caliban, William of Holland, William of Orange 28
- William III of the Netherlands the Greatest Debauchee of the Age
- William III of Ponthieu Talvas
- William III the Child
- William IV, Duke of Bavaria the Steadfast, Steady, Constant''
- William IV, Duke of Brunswick-Lüneburg the Younger
- William IV, Landgrave of Hesse-Kassel (or Hesse-Cassel) the Wise
- William IV, Prince of Orange William Friso
- William IV of Aquitaine the Iron-Arm
- William IV of Ponthieu Talvas
- William IV of the United Kingdom Silly Billy, the Sailor King, Sailor Billy, the Royal Tar 29
- William V, Duke of Bavaria the Pious
- William V, Landgrave of Hesse-Kassel (or Hesse-Cassel) the Constable
- William V, Margrave of Montferrat Inforzato
- William V, Marquess of Montferrat (c.1110–1191) the Elder
- William V, Prince of Orange the Batavian, Batavus
- William V of Aquitaine the Great
- William V of Montferrat the Old
- William VI, Landgrave of Hesse-Kassel (or Hesse-Cassel)
- William VI of Aquitaine the Fat
- William VII of Aquitaine William the Eagle
- William VII of Montferrat the Great Marquess
- William IX of Aquitaine the Troubadour, the Minstrel
- William X of Aquitaine le Toulousain, the Saint
- William Clito 30
- William Iron-Arm
- William, Count of Eu Bussac, Busac 31
- William, Count of Ivry the Little Wolf
- William, Count of Melun the Carpenter 32 33
- William, Duke of Brunswick-Lüneburg the Younger
- William, Duke of Guelders, 1538-1543 the Rich
- William, Duke of Luneburg (d.1213) William of Manchester
- William III, Duke of Luxembourg the Brave
- William, Landgrave of Thuringia the One-Eyed
- William Lord of Bournonville (c.1040–1071) the Brown
- William, Margrave of Parodi (d.c. 1199) Saraceno 34
- William, Margrave of Parodi Pallodino, Palloda 35
- William of Austria the Handsome, the Affable, the Ambitious
- William of Champlitte the Champion
- William of Dampierre (1250–1311) the Landless
- William of Eu the Elder 36
- William of Eu the Younger 37
- William of Evreux Crispin 38
- William of Gellone the Iron-Arm, William of Narbonne, William of Orange, the Short-Nosed, au Court Nez, the Short-Nosed Marquis, the Great, the Saint, Marquis au Court Nez, Firebrace
- William of Germany William of Holland, Villiquins 39
- William of Ivry Lovel 40
- William of Luneburg, Duke of Saxony]] (1184–1213) the Long-Armed
- William of Marck the Rich
- William of Montferrat the Long-Armed
- William of Montferrat, Count of Jaffa and Ascalon Longsword
- William of Normandy, Count of Eu the Consul
- William of Torresana (d. after 925) the Pagan, son of Aleramo, Marquess of Montferrat
- William of Tortosa the Tench 41
- William of Wales Billy the Fish 42, Wills, Willy Wombat 43
- William d'Aubigny (Brito) the Briton 44 45
- William d'Aubigny Meschin
- William d'Aubigny the Strong Hand (Pincerna) 46
- William d'Aubigny (rebel) the Surety, the Magna Carta Baron 47
- William de Braose, 7th Baron Abergavenny the Ogre of Abergavenny 48 49
- William de Braose, Lord of Abergavenny Black William 50
- William de Burgh, 3rd Earl of Ulster the Brown Earl 5152 53
- William de Douglas (d.1384) the Flower of Chivalry
- William de Forz, 3rd Earl of Albemarle the Surety, the Magna Carta Baron 54
- William de Hardell the Surety, the Magna Carta Baron 55
- William de Huntingfield the Surety, the Magna Carta Baron 56
- William de Lanvallei the Surety, the Magna Carta Baron 57
- William de la Marck (d.1485) the Wild Boar of the Ardennes, The Boar of Ardennes, The Ardennes Boar 58
- William Longespée, 3rd Earl of Salisbury Longsword 59
- William de Mowbray the Surety, the Magna Carta Baron 60
- William de Percy, 1st Baron Percy (1040–1096) With the Whiskers, Algernon, Algersnons (With the Whiskers)
- William de Warenne, 1st Earl of Surrey Bellencombre
- William Augustus, Duke of Saxe-Eisenach the Posthumous
- William Berkeley, 1st Marquess of Berkeley the Wastall
- William Cavendish, 6th Duke of Devonshire the Bachelor, the Bachelor Duke
- William Douglas (d.1298) the Hardy
- William Douglas, Lord of Liddesdale the Knight of Liddesdale, the Black Douglas, the Flower of Chivalry, England's Scourge and Scotland's Bulwark
- William Douglas, 4th Duke of Queensberry Old Q
- William Douglas, 8th Earl of Douglas the Loser, Tyneman
- William FitzOsbern, 1st Earl of Hereford The Bravest of the Normans 61
- William Fitz Robert, 2nd Earl of Gloucester (1116–1183) Mafonache, natural grandson of Henry I of England
- William Francis, Margrave of Parodi Francigena 62
- Lord William Howard Bald Willy, Belted Will, Belted Will Howard, the Civiliser of the English Borders 63 64
- William George of Kirchberg the Posthumous
- William Goël of Ivry Goël, Goellus
- William Ironarm
- William Louis, Count of Nassau-Dillenburg Us Heit (Our Father)
- William Malet the Surety, the Magna Carta Baron
- William Marshal, 2nd Earl of Pembroke (d.1231) the Surety, the Magna Carta Baron
- William Marshal, 1st Earl of Pembroke William the Marshal, William Wastemeat , the Flower of Chivalry, the Greatest Knight that Ever Lived, the Protector65
- William Marshal, 2nd Earl of Pembroke the Surety, the Magna Carta Baron 66
- William Maule, 1st Baron Panmure the Generous Sportsman, the King of the Patrons 67
- William Molyneux, 2nd Earl of Sefton Lord Dashalong 68
- William Mure the Knight of Rowallan 69
- William Petty, 2nd Earl of Shelburne the Jesuit in Berkeley Square, Malagrida 70 71
- William Peverel the Younger
- William Pitt, 1st Earl of Chatham the Great Commoner, the Elder, the British Cicero 72 73
- William Raymond II, Baron of Moncada (1090–1173) the Great Seneschal
- William Sinclair, 1st Baron Roslin (1028–1070) the Seemly 74
- William the Silent Father William 75, the Father of the Fatherland, the Taciturn 76, the Younger, the Father of the County, the High-Born Demosthenes 77 78 79 80
- William the Victorious, Duke of Brunswick-Lüneburg
- Władysław I the Elbow-high
- Władysław II the Exile
- Władysław III Spindleshanks
- Wojciech Radziwill, Bishop of Vilnius the Almoner 81
Regnal name
- William III, Count of Hainaut: William I, Duke of Bavaria
- William IV, Count of Zeeland: William I, Duke of Bavaria
- William V, Count of Holland: William I, Duke of Bavaria
- William VII, Count of Poitou: William IX, Duke of Aquitaine
- William X, Margrave of Montferrat: William I, Duke of Mantua
Y
- Yahya ben al-Mundhir of Zaragoza al-Muzzafar 82
- Yahya ben Ismail ben Yahya of Toledo al-Qadir (the Able) 83
- Yahya ben Ismail of Toledo al-Mamun 84
- Yahya ben Muhammad of Badajoz al-Mansur 85
- Yaroslav I the Wise the Father-in-law of Europe, the Wise
- Yaroslav I, Prince of Riazan (d.1219) the Younger
- Yaroslav II, Prince of Pereyaslavl, 1187–1198 Krasniy, the Red
- Yaroslav II of Russia Blagodoudny
- Yaroslav, Prince of Novgorod, 1176–1177 the Handsome
- Yaroslav of Tver Athanase, the Resolute
- Yaroslav Osmomysl the Thinker, Osmomysl 86
- Yolande of Aragon the Prettiest Woman in the Kingdom 87, the Queen of the Four Kingdoms 88
- Yolande of Jerusalem Yolande of Acre, Yolande of Brienne
- Yuri II the Saint
- Yuri II, Prince of Dmitrov, Mozhaysk and Serpukhov, 1462–1472 the Younger
- Yuri II, Prince of Uglich, 1533–1563 the Intermediate
- Yury III, Grand Prince of Vladimir (d.1325) the Red
- Yuri V, Grand Prince of Suzdal the Mute 89
- Yuri of Moscow 90 the Elder
- Yuri, Prince of Turov, 1157–1184 the Elder
- Yuri Dolgoruki Yuri of the Long Hands
- Yuri Bogolyubsky the God-Loving
- Yury of Moscow the Red
- Yves (d.1178), Count of Soissons the Old
Z
- Zeno (emperor) Tarasicodissa, Trascalissaeus 91, the Isaurian
- Ziemovit III, Duke of Mazovia, 1341–1381 Starzsy
- Ziemowit IV of Mazovia the Elder
- Zoe (empress) the Purple-Born