257 BC

Millennium:	1st millennium BC
Centuries:	4th century BC – 3rd century BC – 2nd century BC
Decades:	280s BC  270s BC  260s BC  – 250s BC –  240s BC  230s BC  220s BC
Years:	260 BC 259 BC 258 BC – 257 BC – 256 BC 255 BC 254 BC

257 BC by topic

Politics

State leaders – Sovereign states

Birth and death categories

Births – Deaths

Establishments and disestablishments categories

Establishments – Disestablishments

257 BC in other calendars

Gregorian calendar	257 BC
Ab urbe condita	497
Armenian calendar	N/A
Assyrian calendar	4494
Bahá'í calendar	-2100–-2099
Bengali calendar	-849
Berber calendar	694
English Regnal year	N/A
Buddhist calendar	288
Burmese calendar	-894
Byzantine calendar	5252–5253
Chinese calendar	癸卯年 (2380/2440) — to — 甲辰年 (2381/2441)
Coptic calendar	-540–-539
Ethiopian calendar	-264–-263
Hebrew calendar	3504–3505
Hindu calendars
- Vikram Samvat	-200–-199
- Shaka Samvat	N/A
- Kali Yuga	2845–2846
Holocene calendar	9744
Iranian calendar	878 BP – 877 BP
Islamic calendar	905 BH – 904 BH
Japanese calendar
Korean calendar	2077
Minguo calendar	2168 before ROC 民前2168年
Thai solar calendar	287

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.

Events

By place

Roman Republic

• The Romans attack Sardinia and try to capture it from the Carthaginians.
• The Battle of Tyndaris is fought between the Roman fleet (with Marcus Atilius Regulus in command) and Carthaginian fleet off Tyndaris (modern Tindari) in Sicily. Hiero II, tyrant of Syracuse, has allowed Tyndaris to be a base for the Carthaginians. However, after this battle, the town falls to Roman forces.

Vietnam

• Thục Phán (An Dương Vương), Chief of the Thục Tribe of the Âu Việts, defeats the Văn Lang Confederacy and unifies all Âu Việt and Lạc Việt tribes, thus founding the Kingdom of Âu Lạc and the Thục Dynasty.