AD 121

Millennium: 1st millennium
Centuries:
Decades:
Years:
121 in various calendars
Gregorian calendar121
CXXI
Ab urbe condita874
Assyrian calendar4871
Balinese saka calendar42–43
Bengali calendar−472
Berber calendar1071
Buddhist calendar665
Burmese calendar−517
Byzantine calendar5629–5630
Chinese calendar庚申年 (Metal Monkey)
2818 or 2611
    — to —
辛酉年 (Metal Rooster)
2819 or 2612
Coptic calendar−163 – −162
Discordian calendar1287
Ethiopian calendar113–114
Hebrew calendar3881–3882
Hindu calendars
 - Vikram Samvat177–178
 - Shaka Samvat42–43
 - Kali Yuga3221–3222
Holocene calendar10121
Iranian calendar501 BP – 500 BP
Islamic calendar516 BH – 515 BH
Javanese calendarN/A
Julian calendar121
CXXI
Korean calendar2454
Minguo calendar1791 before ROC
民前1791年
Nanakshahi calendar−1347
Seleucid era432/433 AG
Thai solar calendar663–664
Tibetan calendar阳金猴年
(male Iron-Monkey)
247 or −134 or −906
    — to —
阴金鸡年
(female Iron-Rooster)
248 or −133 or −905

Year 121 (CXXI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Verus and Augur (or, less frequently, year 874 Ab urbe condita). The denomination 121 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.