258 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:	261 BC 260 BC 259 BC – 258 BC – 257 BC 256 BC 255 BC

258 BC by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments

**258 BC in other calendars**
Gregorian calendar	258 BC
Ab urbe condita	496
Armenian calendar	N/A
Bahá'í calendar	-2101 – -2100
Bengali calendar	-850
Berber calendar	693
Buddhist calendar	287
Burmese calendar	-895
Byzantine calendar	5251 – 5252
Chinese calendar	[[Sexagenary cycle\|]]年 (2379/2439) — to — [[Sexagenary cycle\|]]年 (2380/2440)
Coptic calendar	-541 – -540
Ethiopian calendar	-265 – -264
Hebrew calendar	3503 – 3504
Hindu calendars
- Bikram Samwat	-201 – -200
- Shaka Samvat	N/A
- Kali Yuga	2844 – 2845
Holocene calendar	9743
Iranian calendar	879 BP – 878 BP
Islamic calendar	906 BH – 905 BH
Japanese calendar
Korean calendar	2076
Thai solar calendar	286

Events

The Romans are able to regain the initiative in Sicily against Carthage by retaking Enna and Camarina. In central Sicily, they take the town of Mytistraton, which they have attacked twice previously. The Romans also move in the north by marching across the northern coast toward Panormus, but are not able to take the city.
Gaius Duilius Nepos, the Roman commander who has won a major naval victory over the Carthaginians is made censor with Lucius Cornelius Scipio. The election of a novus homo (i.e. the first in his family to serve in the Roman Senate or be elected as consul) to the censorship is a very rare honour.

The forces of the Macedonian King Antigonus II and the Seleucid King Antiochus II win a naval victory at Cos against their common enemy, Ptolemy II. This victory secures Antigonus control over the Aegean Sea and the League of the Islanders. It also diminishes Ptolemaic naval power.