John V may refer to:
Patriarch John V of Alexandria or John the Merciful (died by 620), Patriarch of Alexandria from 606 to 616 John V of Constantinople, Patriarch from 669 to 675 Pope John V (685–686), Pope from 685 to his death in 686 John V of Jerusalem, Greek Orthodox Patriarch of Jerusalem in 706–735 John V the Historian or Hovhannes Draskhanakerttsi, Catholicos of Armenia from 897 to 925 John V of Gaeta (1010–1040) John V of Naples (died 1042), Duke from 1036 to 1042 Pope John V of Alexandria, Coptic Pope from 1147 to 1166 John V, Count of Soissons, (1281–1304) John V, Margrave of Brandenburg-Salzwedel (1302–1317) John V Palaiologos (1332–1391), Byzantine Emperor from 1341 John V, Count of Sponheim-Starkenburg (1359–1437), German nobleman John V, Lord of Arkel (1362–1428) John V, Duke of Brittany (1389–1442), Count of Montfort John V, Duke of Mecklenburg (1418–1443) John V, Count of Hoya (died 1466), nicknamed the Pugnacious or the Wild John V, Count of Armagnac (1420–1473) John V, Duke of Saxe-Lauenburg (1439–1507) John V, Count of Oldenburg (1460–1526) John V, Prince of Anhalt-Zerbst (1504–1551), German prince of the House of Ascania and ruler of Anhalt-Dessau John V of Portugal (1689–1750), King of Portugal and the Algarves
See also John 5, the fifth chapter of the Gospel of John John 5 (guitarist) (John William Lowery, born 1971), American guitarist Johann V, Duke of Mecklenburg-Schwerin Jean V de Bueil (1406–1477)