Centuries:	3rd century BC - 2nd century BC - 1st century BC
Decades:	150s BC  140s BC  130s BC - 120s BC - 110s BC  100s BC  90s BC
Years:	126 BC 125 BC 124 BC - 123 BC - 122 BC 121 BC 120 BC

123 BC by topic

Politics

State leaders - Sovereign states

Birth and death categories

Births - Deaths

Establishments and disestablishments categories

Establishments - Disestablishments v • d • e

123 BC in other calendars

Gregorian calendar	123 BC
Ab urbe condita	631
Armenian calendar	N/A
Bahá'í calendar	-1966 – -1965
Berber calendar	828
Buddhist calendar	422
Burmese calendar	-760
Byzantine calendar	5386 – 5387
Chinese calendar	[[Sexagenary cycle|]]年 (2514/2574) — to — [[Sexagenary cycle|]]年 (2515/2575)
Coptic calendar	-406 – -405
Ethiopian calendar	-130 – -129
Hebrew calendar	3638 – 3639
Hindu calendars
- Vikram Samvat	-67 – -66
- Shaka Samvat	N/A
- Kali Yuga	2979 – 2980
Holocene calendar	9878
Iranian calendar	744 BP – 743 BP
Islamic calendar	767 BH – 766 BH
Japanese calendar
Korean calendar	2211
Thai solar calendar	421
v • d • e

Events

By place

Rome

• Gaius Gracchus elected Roman tribune for the first time. He waited until after his re-election the following year before pushing forward the various civil and agrarian reforms that his brother championed in 133 BC.
• Aix-en-Provence founded under the name of Aquae Sextiae by the Roman consul Sextius Calvinus.
• Lex Acilia repetundarum- repetundae procedures.

Births

Deaths

• Alexander II Zabinas, ruler of the Seleucids.