440 BC
| Centuries: | 6th century BC - 5th century BC - 4th century BC |
| Decades: | 470s BC 460s BC 450s BC - 440s BC - 430s BC 420s BC 410s BC |
| Years: | 443 BC 442 BC 441 BC - 440 BC - 439 BC 438 BC 437 BC |
| 440 BC by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 440 BC |
| Ab urbe condita | 314 |
| Armenian calendar | N/A |
| Bahá'í calendar | -2283 – -2282 |
| Buddhist calendar | 105 |
| Chinese calendar | 2197/2257 (子年) — to —
2198/2258([[Sexagenary cycle|]]年) |
| Coptic calendar | -723 – -722 |
| Ethiopian calendar | -447 – -446 |
| Hebrew calendar | 3321 – 3322 |
| Hindu calendars | |
| - Vikram Samvat | -384 – -383 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2662 – 2663 |
| Holocene calendar | 9561 |
| Iranian calendar | 1061 BP – 1060 BP |
| Islamic calendar | 1094 BH – 1093 BH |
| Japanese calendar | |
| - Imperial Year | Kōki 221 (皇紀221年) |
| Julian calendar | -394 |
| Korean calendar | 1894 |
| Thai solar calendar | 104 |
Events
By place
Greece
- Samos, an autonomous member of the Delian League and one of Athens' principal allies with a substantial fleet of its own, quarrels with Miletus and appeals to Athens for assistance. Pericles decides in favour of Miletus, so Samos revolts. Pericles then sails to Samos with a fleet to overthrow its oligarchic government and install a democratic one. Sparta threatens to interfere. However, at a congress of the Peloponnesian League, its members vote not to intervene on behalf of Samos against Athens.
Roman Republic
China
- Zhou kao wang becomes King of the Zhou Dynasty of China.
By topic
Physics
- Democritus proposes the existence of indivisible particles, which he calls atoms.
Art
- Polykleitos completes one of his greatest statues, the Doryphorus (The Spear Bearer) (approximate date).
- The metope relief, Lapith fighting a centaur, from the Doric metope on the side of the Parthenon, is made. It is now preserved at The British Museum in London (approximate date).
- The stela, Demeter, Persephone and Triptolemos, from Eleusis, is made (approximate date). It is now kept at the National Archeological Museum in Athens.
Births
Deaths
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