740s BC

This article concerns the period 749 BC – 740 BC.

• 748 BC—Anticles of Messenia wins the stadion race at the eighth Olympic Games.
• 747 BC—February 26 – Nabonassar becomes king of Babylon.
• 747 BC—Meles becomes king of Lydia.
• c. 744 BC—Piye starts to rule in parts of Ancient Egypt.
• 745 BC—The crown of Assyria seized by Pul, who takes the name Tiglath-Pileser III.
• 745 BC—Legendary death of Titus Tatius Roman King (Diarchy with Romulus ).
• 744 BC—Xenocles of Messenia wins the stadion race at the ninth Olympic Games.
• 743 BC—Duke Zhuang of the Chinese state of Zheng comes to power.
• 743 BC—Beginning of the First Messenian War.
• 740 BC—Tiglath-Pileser III conquers the city of Arpad in Syria after two years of siege.
• 740 BC—Start of Ahaz's reign of Judah.
• 740 BC—Dotades of Messenia wins the stadion race at the tenth Olympic Games.