121 BC

121 BC in various calendars
Gregorian calendar	121 BC; CXXI BC
Ab urbe condita	633
Ancient Egypt era	XXXIII dynasty, 203
- Pharaoh	Ptolemy VIII Physcon, 25
Ancient Greek era	164th Olympiad, year 4
Assyrian calendar	4630
Balinese saka calendar	N/A
Bengali calendar	−713
Berber calendar	830
Buddhist calendar	424
Burmese calendar	−758
Byzantine calendar	5388–5389
Chinese calendar	己未年 (Earth Goat); 2577 or 2370; — to —; 庚申年 (Metal Monkey); 2578 or 2371
Coptic calendar	−404 – −403
Discordian calendar	1046
Ethiopian calendar	−128 – −127
Hebrew calendar	3640–3641
Hindu calendars
- Vikram Samvat	−64 – −63
- Shaka Samvat	N/A
- Kali Yuga	2980–2981
Holocene calendar	9880
Iranian calendar	742 BP – 741 BP
Islamic calendar	765 BH – 764 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2213
Minguo calendar	2032 before ROC; 民前2032年
Nanakshahi calendar	−1588
Seleucid era	191/192 AG
Thai solar calendar	422–423
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

Millennium:	1st millennium BC
Centuries:	3rd century BC; 2nd century BC ; 1st century BC;
Decades:	140s BC; 130s BC; 120s BC ; 110s BC; 100s BC;
Years:	124 BC; 123 BC; 122 BC; 121 BC ; 120 BC; 119 BC; 118 BC;

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.

Gregorian calendar	121 BC CXXI BC
Ab urbe condita	633
Ancient Egypt era	XXXIII dynasty, 203
- Pharaoh	Ptolemy VIII Physcon, 25
Ancient Greek era	164th Olympiad, year 4
Assyrian calendar	4630
Balinese saka calendar	N/A
Bengali calendar	−713
Berber calendar	830
Buddhist calendar	424
Burmese calendar	−758
Byzantine calendar	5388–5389
Chinese calendar	己未年 (Earth Goat) 2577 or 2370 — to — 庚申年 (Metal Monkey) 2578 or 2371
Coptic calendar	−404 – −403
Discordian calendar	1046
Ethiopian calendar	−128 – −127
Hebrew calendar	3640–3641
Hindu calendars
- Vikram Samvat	−64 – −63
- Shaka Samvat	N/A
- Kali Yuga	2980–2981
Holocene calendar	9880
Iranian calendar	742 BP – 741 BP
Islamic calendar	765 BH – 764 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2213
Minguo calendar	2032 before ROC 民前2032年
Nanakshahi calendar	−1588
Seleucid era	191/192 AG
Thai solar calendar	422–423
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