266 BC

Millennium:	1st millennium BC
Centuries:	4th century BC – 3rd century BC – 2nd century BC
Decades:	290s BC  280s BC  270s BC  – 260s BC –  250s BC  240s BC  230s BC
Years:	269 BC 268 BC 267 BC – 266 BC – 265 BC 264 BC 263 BC

266 BC in other calendars

Gregorian calendar	266 BC CCLXV BC
Ab urbe condita	488
Ancient Egypt era	XXXIII dynasty, 58
- Pharaoh	Ptolemy II Philadelphus, 18
Ancient Greek era	128th Olympiad, year 3
Assyrian calendar	4485
Bengali calendar	−858
Berber calendar	685
Buddhist calendar	279
Burmese calendar	−903
Byzantine calendar	5243–5244
Chinese calendar	甲午年 (Wood Horse) 2431 or 2371     — to — 乙未年 (Wood Goat) 2432 or 2372
Coptic calendar	−549 – −548
Discordian calendar	901
Ethiopian calendar	−273 – −272
Hebrew calendar	3495–3496
Hindu calendars
- Vikram Samvat	−209 – −208
- Shaka Samvat	N/A
- Kali Yuga	2836–2837
Holocene calendar	9735
Iranian calendar	887 BP – 886 BP
Islamic calendar	914 BH – 913 BH
Julian calendar	N/A
Korean calendar	2068
Minguo calendar	2177 before ROC 民前2177年
Seleucid era	46/47 AG
Thai solar calendar	277–278

Year 266 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Pera and Pictor (or, less frequently, year 488 Ab urbe condita). The denomination 266 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.

Events

By place

Roman Republic

• January 23 – Marcus Atilius Regulus and Lucius Julius Libo celebrate triumphs over the Salentini.
• Calabria and Messapia are annexed by the Roman Republic.

Asia Minor

• Ariobarzanes becomes the second king of Pontus, succeeding his father Mithridates I Ctistes.

India

• The Mauryan emperor Ashoka converts to Buddhism.

Deaths

• Mithridates I Ctistes, founder of the kingdom of Pontus in Anatolia