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 v • d • e

440 BC in other calendars

Gregorian calendar	440 BC
Ab urbe condita	314
Armenian calendar	N/A
Bahá'í calendar	-2283 – -2282
Berber calendar	511
Buddhist calendar	105
Burmese calendar	-1077
Byzantine calendar	5069 – 5070
Chinese calendar	子年 (2197/2257) — to — [[Sexagenary cycle|]]年 (2198/2258)
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
Korean calendar	1894
Thai solar calendar	104
v • d • e

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

• A famine strikes in Rome.

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 stela, Demeter, Persephone and Triptolemos, from Eleusis, is made (approximate date). It is now kept at the National Archaeological Museum of Athens.
• A temple for Poseidon is erected in Sounion.

Births

Deaths

• Ducetius, a Hellenized leader of the Sicels and founder of a united Sicilian state