 | This article needs additional citations for verification. (February 2020) |
| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| AD 121 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 121 CXXI |
| Ab urbe condita | 874 |
| Assyrian calendar | 4871 |
| Balinese saka calendar | 42–43 |
| Bengali calendar | −472 |
| Berber calendar | 1071 |
| Buddhist calendar | 665 |
| Burmese calendar | −517 |
| Byzantine calendar | 5629–5630 |
| Chinese calendar | 庚申年 (Metal Monkey) 2818 or 2611 — to — 辛酉年 (Metal Rooster) 2819 or 2612 |
| Coptic calendar | −163 – −162 |
| Discordian calendar | 1287 |
| Ethiopian calendar | 113–114 |
| Hebrew calendar | 3881–3882 |
| Hindu calendars | |
| - Vikram Samvat | 177–178 |
| - Shaka Samvat | 42–43 |
| - Kali Yuga | 3221–3222 |
| Holocene calendar | 10121 |
| Iranian calendar | 501 BP – 500 BP |
| Islamic calendar | 516 BH – 515 BH |
| Javanese calendar | N/A |
| Julian calendar | 121 CXXI |
| Korean calendar | 2454 |
| Minguo calendar | 1791 before ROC 民前1791年 |
| Nanakshahi calendar | −1347 |
| Seleucid era | 432/433 AG |
| Thai solar calendar | 663–664 |
| 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.