231 BC

Millennium:	1st millennium BC
Centuries:	4th century BC 3rd century BC 2nd century BC
Decades:	250s BC 240s BC 230s BC 220s BC 210s BC
Years:	234 BC 233 BC 232 BC 231 BC 230 BC 229 BC 228 BC

231 BC in various calendars

Gregorian calendar	231 BC CCXXX BC
Ab urbe condita	523
Ancient Egypt era	XXXIII dynasty, 93
- Pharaoh	Ptolemy III Euergetes, 16
Ancient Greek era	137th Olympiad, year 2
Assyrian calendar	4520
Bengali calendar	−823
Berber calendar	720
Buddhist calendar	314
Burmese calendar	−868
Byzantine calendar	5278–5279
Chinese calendar	己巳年 (Earth Snake) 2466 or 2406     — to — 庚午年 (Metal Horse) 2467 or 2407
Coptic calendar	−514 – −513
Discordian calendar	936
Ethiopian calendar	−238 – −237
Hebrew calendar	3530–3531
Hindu calendars
- Vikram Samvat	−174 – −173
- Shaka Samvat	N/A
- Kali Yuga	2870–2871
Holocene calendar	9770
Iranian calendar	852 BP – 851 BP
Islamic calendar	878 BH – 877 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2103
Minguo calendar	2142 before ROC 民前2142年
Nanakshahi calendar	−1698
Seleucid era	81/82 AG
Thai solar calendar	312–313
This box:

Year 231 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Matho and Maso (or, less frequently, year 523 Ab urbe condita). The denomination 231 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

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