840s BC
| Millennium: | 1st millennium BC |
| Centuries: | 10th century BC – 9th century BC – 8th century BC |
| Decades: | 870s BC 860s BC 850s BC – 840s BC – 830s BC 820s BC 810s BC |
| Years: | 849 BC 848 BC 847 BC 846 BC 845 BC 844 BC 843 BC 842 BC 841 BC 840 BC |
| Categories: | Births – Deaths Establishments |
Events and trends
- 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; Israel and the Phoenician cities send tribute.
- 841 BC—Exile of King Li of the Zhou Dynasty of Ancient China, and the Gonghe Regency, began. Records of the Grand Historian (compiled by historian Sima Qian by 91 BC) regards this year as the first year of consecutive annual dating of Chinese history.