300 BC

Centuries:	4th century BC - 3rd century BC - 2nd century BC
Decades:	330s BC 320s BC 310s BC - 300s BC - 290s BC 280s BC 270s BC
Years:	303 BC 302 BC 301 BC - 300 BC - 299 BC 298 BC 297 BC

300 BC by topic
Politics
State leaders - Sovereign states
Birth and death categories
Births - Deaths
Establishments and disestablishments categories
Establishments - Disestablishments v • d • e

**300 BC in other calendars**
Gregorian calendar	300 BC
Ab urbe condita	454
Armenian calendar	N/A
Bahá'í calendar	-2143 – -2142
Berber calendar	651
Buddhist calendar	245
Burmese calendar	-937
Chinese calendar	2337/2397 ([[Sexagenary cycle\|]]年) — to — 2338/2398 ([[Sexagenary cycle\|]]年)
Coptic calendar	-583 – -582
Ethiopian calendar	-307 – -306
Hebrew calendar	3461 – 3462
Hindu calendars
- Vikram Samvat	-244 – -243
- Shaka Samvat	N/A
- Kali Yuga	2802 – 2803
Holocene calendar	9701
Iranian calendar	921 BP – 920 BP
Islamic calendar	949 BH – 948 BH
Japanese calendar
- Imperial Year	Kōki 361 (皇紀361年)
Korean calendar	2034
Thai solar calendar	244
v • d • e

Events

Pyrrhus, the King of Epirus, is taken as a hostage to Egypt after the Battle of Ipsus and makes a diplomatic marriage with the princess Antigone, daughter of Ptolemy and Berenice.
Ptolemy concludes an alliance with King Lysimachus of Thrace and gives him his daughter Arsinoe II in marriage.

Seleucus founds the city of Antioch, some 20 miles up the Orontes River, naming it after his father.
After the death of his wife Apama, Seleucus marries Stratonice, daughter of Demetrius Poliorcetes.

The central texts of Jainism, the Jain scriptures, are recorded (approximate date).

In Pella (in Macedonia), the artist Gnosis makes a mosaic floor decoration called Stag Hunt and even signs it with "Gnosis made it". It is today preserved at the Archaeological museum in Pella.