| Centuries: | 3rd century BC - 2nd century BC - 1st century BC |
| Decades: | 140s BC 130s BC 120s BC - 110s BC - 100s BC 90s BC 80s BC |
| Years: | 121 BC 120 BC 119 BC - 118 BC - 117 BC 116 BC 115 BC |
| 118 BC by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - | |
| Establishments and disestablishments categories | |
| Establishments - | |
| Gregorian calendar | 118 BC |
| Ab urbe condita | 636 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1961 – -1960 |
| Berber calendar | 833 |
| Buddhist calendar | 427 |
| Burmese calendar | -755 |
| Chinese calendar | 2519/2579 ([[Sexagenary cycle|]]年) — to —
2520/2580([[Sexagenary cycle|]]年) |
| Coptic calendar | -401 – -400 |
| Ethiopian calendar | -125 – -124 |
| Hebrew calendar | 3643 – 3644 |
| Hindu calendars | |
| - Vikram Samvat | -62 – -61 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2984 – 2985 |
| Holocene calendar | 9883 |
| Iranian calendar | 739 BP – 738 BP |
| Islamic calendar | 762 BH – 761 BH |
| Japanese calendar | |
| - Imperial Year | Kōki 543 (皇紀543年) |
| Julian calendar | -72 |
| Korean calendar | 2216 |
| Thai solar calendar | 426 |
Events
By place
Rome
- The Roman colony of Narbo Martius is founded in Gallia Transalpina.
