| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 3rd century BC – 2nd century BC – 1st century BC |
| Decades: | 150s BC 140s BC 130s BC – 120s BC – 110s BC 100s BC 90s BC |
| Years: | 123 BC 122 BC 121 BC – 120 BC – 119 BC 118 BC 117 BC |
| 120 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 120 BC |
| Ab urbe condita | 634 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1963 – -1962 |
| Bengali calendar | -712 |
| Berber calendar | 831 |
| Buddhist calendar | 425 |
| Burmese calendar | -757 |
| Byzantine calendar | 5389 – 5390 |
| Chinese calendar | [[Sexagenary cycle|]]年 (2517/2577) — to —
[[Sexagenary cycle|]]年(2518/2578) |
| Coptic calendar | -403 – -402 |
| Ethiopian calendar | -127 – -126 |
| Hebrew calendar | 3641 – 3642 |
| Hindu calendars | |
| - Bikram Samwat | -63 – -62 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2982 – 2983 |
| Holocene calendar | 9881 |
| Iranian calendar | 741 BP – 740 BP |
| Islamic calendar | 764 BH – 763 BH |
| Japanese calendar | |
| Korean calendar | 2214 |
| Thai solar calendar | 424 |