| 115 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 115 BC |
| Ab urbe condita | 639 |
| Armenian calendar | N/A |
| Assyrian calendar | 4636 |
| Bahá'í calendar | -1958–-1957 |
| Bengali calendar | -707 |
| Berber calendar | 836 |
| English Regnal year | N/A |
| Buddhist calendar | 430 |
| Burmese calendar | -752 |
| Byzantine calendar | 5394–5395 |
| Chinese calendar | 乙丑年 (2522/2582) — to —
丙寅年(2523/2583) |
| Coptic calendar | -398–-397 |
| Ethiopian calendar | -122–-121 |
| Hebrew calendar | 3646–3647 |
| Hindu calendars | |
| - Vikram Samvat | -58–-57 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 2987–2988 |
| Holocene calendar | 9886 |
| Iranian calendar | 736 BP – 735 BP |
| Islamic calendar | 759 BH – 758 BH |
| Japanese calendar | |
| Korean calendar | 2219 |
| Minguo calendar | 2026 before ROC 民前2026年 |
| Thai solar calendar | 429 |
Year 115 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Scaurus and Metellus (or, less frequently, year 639 Ab urbe condita). The denomination 115 BC 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.