90 BC

Centuries:	2nd century BC - 1st century BC - 1st century
Decades:	120s BC 110s BC 100s BC - 90s BC - 80s BC 70s BC 60s BC
Years:	93 BC 92 BC 91 BC - 90 BC - 89 BC 88 BC 87 BC

90 BC by topic
Politics
State leaders - Sovereign states
Birth and death categories
Births - Deaths
Establishments and disestablishments categories
Establishments - Disestablishments v • d • e

**90 BC in other calendars**
Gregorian calendar	90 BC
Ab urbe condita	664
Armenian calendar	N/A
Bahá'í calendar	-1933 – -1932
Berber calendar	861
Buddhist calendar	455
Burmese calendar	-727
Chinese calendar	2547/2607 ([[Sexagenary cycle\|]]年) — to — 2548/2608 ([[Sexagenary cycle\|]]年)
Coptic calendar	-373 – -372
Ethiopian calendar	-97 – -96
Hebrew calendar	3671 – 3672
Hindu calendars
- Vikram Samvat	-34 – -33
- Shaka Samvat	N/A
- Kali Yuga	3012 – 3013
Holocene calendar	9911
Iranian calendar	711 BP – 710 BP
Islamic calendar	733 BH – 732 BH
Japanese calendar
- Imperial Year	Kōki 571 (皇紀571年)
Korean calendar	2244
Thai solar calendar	454
v • d • e

Year 90 BC was a year of the pre-Julian calendar.

Events

Consuls: Lucius Julius Caesar and Publius Rutilius Lupus.
Social War continues: Pompeius Strabo and Gaius Marius distinguish themselves.
The Etruscans are granted Roman citizenship.
Corfinium in south-central Italy is the center of a rebellion against Rome.
The Lex Iulia grants citizenship to all Italians who did not oppose Rome during the Social War.
Cicero starts to serve in the Roman army.