The 1080s BC was a decade which lasted from 1089 BC to 1080 BC.

• Iron Age continues
• 1089 BC—Melanthus, legendary King of Athens, dies after a reign of 37 years and is succeeded by his son Codrus.
• Early 1080s BC- Herihor, the high-priest of Amon, usurps Ramesses XI's authority, becoming the de facto ruler of Upper Egypt.
• 1082 BC- Babylonia suffers from a severe famine.^[1]
• c.1081 BC- Herihor dies.
• Early phase of transition from New Kingdom Period to Third Intermediate Period in Egypt continues.

• Tiglath-Pileser I, King of Assyria, r. c.1114–1076 BC
• Melanthus, Legendary King of Athens, r. c.1126–1089 BC.
• Codrus, Legendary King of Athens, r. c.1089–1068 BC
• Marduk-nadin-ahhe, King of Babylon, r. 1100–1082 BC
• Marduk-shapik-zeri, King of Babylon, r. 1082–1069 BC
• Di Yi, Shang dynasty king of China, r. c.1101–1076 BC
• Ramesses XI, Pharaoh of Egypt, r. 1107–1077 BC
• Herihor, High priest of Amon
• Eli, Judge of Ancient Israel