William V

William V may refer to:


 * William V, Duke of Aquitaine (969–1030)
 * William V of Montpellier (1075–1121)
 * William V, Marquess of Montferrat (c. 1115 – 1191)
 * William V, Count of Nevers (before 1175 – 1181)
 * William V, Duke of Jülich (1299–1361)
 * William V, Count of Holland (1330–1389)
 * William V of Jülich-Berg (1516–1592)
 * William V, Duke of Bavaria (1548–1626)
 * William V, Landgrave of Hesse-Kassel (1602–1637)
 * William V, Prince of Orange (1748–1806)