158 BC

Millennium:	1st millennium BC
Centuries:	3rd century BC – 2nd century BC – 1st century BC
Decades:	180s BC  170s BC  160s BC  – 150s BC –  140s BC  130s BC  120s BC
Years:	161 BC 160 BC 159 BC – 158 BC – 157 BC 156 BC 155 BC

158 BC in other calendars

Gregorian calendar	158 BC CLVII BC
Ab urbe condita	596
Ancient Egypt era	XXXIII dynasty, 166
- Pharaoh	Ptolemy VI Philometor, 23
Ancient Greek era	155th Olympiad, year 3
Assyrian calendar	4593
Bengali calendar	−750
Berber calendar	793
Buddhist calendar	387
Burmese calendar	−795
Byzantine calendar	5351–5352
Chinese calendar	壬午年 (Water Horse) 2539 or 2479     — to — 癸未年 (Water Goat) 2540 or 2480
Coptic calendar	−441 – −440
Discordian calendar	1009
Ethiopian calendar	−165 – −164
Hebrew calendar	3603–3604
Hindu calendars
- Vikram Samvat	−101 – −100
- Shaka Samvat	N/A
- Kali Yuga	2944–2945
Holocene calendar	9843
Iranian calendar	779 BP – 778 BP
Islamic calendar	803 BH – 802 BH
Julian calendar	N/A
Korean calendar	2176
Minguo calendar	2069 before ROC 民前2069年
Seleucid era	154/155 AG
Thai solar calendar	385–386

Year 158 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Lepidus and Laenas (or, less frequently, year 596 Ab urbe condita). The denomination 158 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

Asia Minor

• At the request of the Romans, Ariarathes V, king of Cappadocia, rejects a proposal from the Seleucid king, Demetrius I, for him to marry the sister of Demetrius I. In response, Seleucid forces attack Cappadocia and remove Ariarathes V from the Cappadocian throne. Demetrius I then replaces him with Orophernes Nicephorus, a supposed son of the late king, Ariarathes IV. With Ariarathes V deprived of his kingdom, he flees to Rome.
• Attalus II Philadelphus, the second son of Attalus I Soter of Pergamum, ascends the throne following the death of his elder brother, Eumenes II.

Births

• Publius Rutilius Rufus, Roman consul, statesman, orator and historian (d. c. 78 BC)

Deaths

• Eumenes II, King of Pergamum who has ruled since 197 BC and a member of the Attalid dynasty; a brilliant statesman, he has brought his small kingdom to the peak of its power and made Pergamum a great centre of Greek culture in Anatolia