| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century – 2nd century – 3rd century |
| Decades: | 90s 100s 110s – 120s – 130s 140s 150s |
| Years: | 117 118 119 – 120 – 121 122 123 |
| 120 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 120 CXX |
| Ab urbe condita | 873 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1724 – -1723 |
| Bengali calendar | -473 |
| Berber calendar | 1070 |
| Buddhist calendar | 664 |
| Burmese calendar | -518 |
| Byzantine calendar | 5628 – 5629 |
| Chinese calendar | 己未年十一月十三日 (2756/2816-11-13) — to —
庚申年十一月廿四日(2757/2817-11-24) |
| Coptic calendar | -164 – -163 |
| Ethiopian calendar | 112 – 113 |
| Hebrew calendar | 3880 – 3881 |
| Hindu calendars | |
| - Bikram Samwat | 176 – 177 |
| - Shaka Samvat | 42 – 43 |
| - Kali Yuga | 3221 – 3222 |
| Holocene calendar | 10120 |
| Iranian calendar | 502 BP – 501 BP |
| Islamic calendar | 517 BH – 516 BH |
| Japanese calendar | |
| Korean calendar | 2453 |
| Thai solar calendar | 663 |
Year 120 (CXX) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar.