131 BC

Millennium:	1st millennium BC
Centuries:	3rd century BC 2nd century BC 1st century BC
Decades:	150s BC 140s BC 130s BC 120s BC 110s BC
Years:	134 BC 133 BC 132 BC 131 BC 130 BC 129 BC 128 BC

131 BC in various calendars

Gregorian calendar	131 BC CXXXI BC
Ab urbe condita	623
Ancient Egypt era	XXXIII dynasty, 193
- Pharaoh	Ptolemy VIII Physcon, 15
Ancient Greek era	162nd Olympiad, year 2
Assyrian calendar	4620
Balinese saka calendar	N/A
Bengali calendar	−723
Berber calendar	820
Buddhist calendar	414
Burmese calendar	−768
Byzantine calendar	5378–5379
Chinese calendar	己酉年 (Earth Rooster) 2567 or 2360     — to — 庚戌年 (Metal Dog) 2568 or 2361
Coptic calendar	−414 – −413
Discordian calendar	1036
Ethiopian calendar	−138 – −137
Hebrew calendar	3630–3631
Hindu calendars
- Vikram Samvat	−74 – −73
- Shaka Samvat	N/A
- Kali Yuga	2970–2971
Holocene calendar	9870
Iranian calendar	752 BP – 751 BP
Islamic calendar	775 BH – 774 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2203
Minguo calendar	2042 before ROC 民前2042年
Nanakshahi calendar	−1598
Seleucid era	181/182 AG
Thai solar calendar	412–413
Tibetan calendar	阴土鸡年 (female Earth-Rooster) −4 or −385 or −1157     — to — 阳金狗年 (male Iron-Dog) −3 or −384 or −1156

Year 131 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Mucianus and Flaccus (or, less frequently, year 623 Ab urbe condita) and the Fourth Year of Yuanguang. The denomination 131 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

• Aristonicus of Pergamon leads an uprising against Rome, and consul Publius Licinius Crassus Mucianius is killed in the fighting.
• The Roman censor Quintus Caecilius Metellus Macedonicus attempts to remove the tribune Gaius Atinius Labeo Macerio from the Senate, the angry Atinius drags him to be thrown off the Tarpeian Rock, and Metellus is only saved by the intervention of other senators.
• The tribune Gaius Papirius Carbo passes a measure allowing the use of secret ballots in legislative assemblies.
• For the first time in Roman history, both censors are plebeians (Metellus and Quintus Pompeius).
• First Acta Diurna appears in Rome around this time.