257 BC

Millennium:	1st millennium BC
Centuries:	4th century BC 3rd century BC 2nd century BC
Decades:	270s BC 260s BC 250s BC 240s BC 230s BC
Years:	260 BC 259 BC 258 BC 257 BC 256 BC 255 BC 254 BC

257 BC in various calendars

Gregorian calendar	257 BC CCLVI BC
Ab urbe condita	497
Ancient Egypt era	XXXIII dynasty, 67
- Pharaoh	Ptolemy II Philadelphus, 27
Ancient Greek era	130th Olympiad, year 4
Assyrian calendar	4494
Bengali calendar	−849
Berber calendar	694
Buddhist calendar	288
Burmese calendar	−894
Byzantine calendar	5252–5253
Chinese calendar	癸卯年 (Water Rabbit) 2440 or 2380     — to — 甲辰年 (Wood Dragon) 2441 or 2381
Coptic calendar	−540 – −539
Discordian calendar	910
Ethiopian calendar	−264 – −263
Hebrew calendar	3504–3505
Hindu calendars
- Vikram Samvat	−200 – −199
- Shaka Samvat	N/A
- Kali Yuga	2844–2845
Holocene calendar	9744
Iranian calendar	878 BP – 877 BP
Islamic calendar	905 BH – 904 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2077
Minguo calendar	2168 before ROC 民前2168年
Nanakshahi calendar	−1724
Seleucid era	55/56 AG
Thai solar calendar	286–287
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Year 257 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Regulus and Blasio (or, less frequently, year 497 Ab urbe condita). The denomination 257 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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