1340 deaths

Prince of Moscow and Grand Prince of Vladimir

Emperor of Trebizond

Abbasid caliph

Duke of Lower Bavaria.

Count of Holstein-Rendsburg

Polish noble (1308-1340)

Danish folk hero

Budashiri, alternatively rendered as Buddhashiri and Putashali (Mongolian: ᠪᠤᠳᠢᠰᠢᠷᠢ, ; ; c. 1307 – c. 1340), was an empress consort of China's Yuan dynasty as the wife of Jayaatu Khan Tugh Temür (Emperor Wenzong). She acted as an interim regent and was the prominent figure of the Yuan dynasty between 1332 and 1339; she was interim regent after the death of her husband and the election of his successor in 1332-1333, and then regent during the minority of his successor in 1333-1339.

Queen of Majorca

Spanish rabbi

Byzantine astronomer

20th Grandmaster of the Teutonic Order

Mongol general (1280-1340)

Sayf ad-Din Tankiz ibn Abdullah al-Husami an-Nasiri, better known simply as Tankiz (; died May 1340), was the Damascus-based Turkic ''na'ib al-saltana'' (viceroy) of Syria from 1312 to 1340 during the reign of the Bahri Mamluk sultan an-Nasir Muhammad.

English noble (1280-1340)

Catholic cardinal

legendary king of the Khmer Empire

43rd Archbishop of York

Count of Henneberg-Schleusingen

Spanish folk healer (1275–1340)

French admiral

Italian noble

Jewish lexicographer and rabbi

Karaman bey

English noble

Archbishop of Riga (1270–1340)

French admiral and financier

ruler of Aq Qoyunlu tribal union

Indian Sufi

Italian jurist

Arab calligrapher (1256–1340)

Lord High Treasurer of England; Lord Chancellor of England; Bishop of Lincoln

philosopher

German nobleman

Bey Germiyan

bey of Jandar from 1309 to 1341

Polish noblewoman

Dutch bishop