9th century BC
|Millennium:||1st millennium BC|
|Decades:||890s BC 880s BC 870s BC 860s BC 850s BC
840s BC 830s BC 820s BC 810s BC 800s BC
|Categories:||Births – Deaths
Establishments – Disestablishments
The 9th century BC started the first day of 900 BC and ended the last day of 801 BC.
The 9th century BC was a period of great changes in civilizations. In Africa, Carthage is founded by the Phoenicians. In Egypt, a severe flood covers the floor of Luxor temple, and years later, a civil war starts.
- 895 BC: Death of King Xiao of Zhou, King of the Zhou Dynasty of China.
- 894 BC: King Yi of Zhou becomes King of the Zhou Dynasty of China.
- 892 BC: Megacles, King of Athens, dies after a reign of 30 years and is succeeded by his son Diognetus.
- 891 BC: Tukulti-Ninurta II succeeds his father Adad-nirari II as king of Assyria.
- 889 BC: Takelot I succeeds his father Osorkon I as king of Egypt.
- 884 BC: Ashurnasirpal II succeeds his father Tukulti-Ninurta II as king of Assyria.
- 879 BC: Death of King Yi of Zhou, King of the Zhou Dynasty of China.
- 878 BC: King Li of Zhou becomes King of the Zhou Dynasty of China.
- 874 BC: Osorkon II succeeds Takelot I as king of the Twenty-second dynasty of Egypt.
- 874 BC: Ahab becomes king of Kingdom of Israel (approximate date).
- 872 BC: An exceptionally high flood of the Nile covers the floors of the Temple of Luxor.
- 865 BC: Kar Kalmaneser was conquered by the Assyrian king Shalmaneser III.
- 864 BC: Diognetus, King of Athens, dies after a reign of 28 years and is succeeded by his son Pherecles.
- 860 BC: The kingdom of Urartu is unified.
- 858 BC: Aramu becomes king of Urartu.
- 858 BC: Shalmaneser III succeeds Ashurnasirpal II as king of Assyria.
- 854/3 BC: Battle of Karkar—An indecisive engagement between Assyrian king Shalmaneser III and a military alliance of the king of Damascus and lesser powers including the prince of Tyre. (Either 854 or 853 BC)
- 850 BC: Takelot II succeeds Osorkon II as King of Egypt.
- 850 BC: The Middle Mumun Pottery Period begins in the Korean peninsula.
- 845 BC: Pherecles, King of Athens, dies after a reign of 19 years and is succeeded by his son Ariphron.
- 842 BC: Shalmaneser III devastates the territory of Damascus; Kingdom of Israel and the Phoenician cities send tribute.
- 841 BC: Death of King Li of Zhou, King of the Zhou Dynasty of China.
- 841 BC: Records of the Grand Historian regards this year as the first year of consecutive annual dating of Chinese history.
- 836 BC: Shalmaneser III of Assyria leads an expedition against the Tabareni.
- 836 BC: Civil war breaks out in Egypt.
- 827 BC: King Xuan of Zhou becomes King of the Zhou Dynasty of China.
- 825 BC: Takelot II, king of Egypt, dies. Crown Prince Osorkon III and Shoshenq III, sons of Takelot, battle for the throne.
- c. 825 BC: Ariphron, King of Athens, dies after a reign of 20 years and is succeeded by his son Thespieus.
- 823 BC: Death of Shalmaneser III, king of Assyria. He is succeeded by his son Shamshi-Adad V.
- 820 BC: Pygmalion ascends the throne of Tyre.
- 817 BC: Pedubastis I declares himself king of Egypt, founding the Twenty-third Dynasty.
- 814 BC: Carthage is founded by Dido (traditional date).
- 813 BC: Carthage is founded by Phoenicians.
- 811 BC: Adad-nirari III succeeds his father Shamshi-Adad V as king of Assyria.
- 804 BC: Adad-nirari III of Assyria conquers Damascus.
- 804 BC: Death of Pedubastis I, pharaoh.
- c. 800 BC: Etruscan civilization.
- Beginning of the Iron Age in Central Europe, spread of the Proto-Celtic Hallstatt culture, and the Proto-Celtic language.
- Adena culture appears in present day Northeastern United States.
 Significant persons
- Elijah, a 9th-century BC prophet found in the Old Testament (Tanakh) of the Bible.
- Shalmaneser III, king of Assyria (858 BC–824 BC)
 Inventions, discoveries, introductions
- First inscriptions in Epigraphic South Arabian found in Akkele Guzay
- 9th century BC—Olmecs build pyramids.
- Emergence of the Brahmana period of Vedic Sanskrit, probable composition of the Shatapatha Brahmana, and the first beginning of the Upanishadic and Vedantic traditions of Hinduism.
 In works of fiction
- In True Blood, the vampire known as Russell Edgington was born around 850 BC, and was turned about 800 BC.
- Fattovich, Rodolfo, "Akkälä Guzay" in von Uhlig, Siegbert, ed. Encyclopaedia Aethiopica: A-C. Weissbaden: Otto Harrassowitz KG, 2003, p.169.