121 BC

Millennium: 1st millennium BC
Centuries:
Decades:
Years:
121 BC in various calendars
Gregorian calendar121 BC
CXXI BC
Ab urbe condita633
Ancient Egypt eraXXXIII dynasty, 203
- PharaohPtolemy VIII Physcon, 25
Ancient Greek era164th Olympiad, year 4
Assyrian calendar4630
Balinese saka calendarN/A
Bengali calendar−713
Berber calendar830
Buddhist calendar424
Burmese calendar−758
Byzantine calendar5388–5389
Chinese calendar己未年 (Earth Goat)
2577 or 2370
    — to —
庚申年 (Metal Monkey)
2578 or 2371
Coptic calendar−404 – −403
Discordian calendar1046
Ethiopian calendar−128 – −127
Hebrew calendar3640–3641
Hindu calendars
 - Vikram Samvat−64 – −63
 - Shaka SamvatN/A
 - Kali Yuga2980–2981
Holocene calendar9880
Iranian calendar742 BP – 741 BP
Islamic calendar765 BH – 764 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar2213
Minguo calendar2032 before ROC
民前2032年
Nanakshahi calendar−1588
Seleucid era191/192 AG
Thai solar calendar422–423
Tibetan calendar阴土羊年
(female Earth-Goat)
6 or −375 or −1147
    — to —
阳金猴年
(male Iron-Monkey)
7 or −374 or −1146

Year 121 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Opimius and Allobrogicus (or, less frequently, year 633 Ab urbe condita) and the Second Year of Yuanshou. The denomination 121 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.