| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 2nd century BC – 1st century BC – 1st century |
| Decades: | 40s BC 30s BC 20s BC – 10s BC – 0s BC 0s 10s |
| Years: | 18 BC 17 BC 16 BC – 15 BC – 14 BC 13 BC 12 BC |
| 15 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 15 BC |
| Ab urbe condita | 739 |
| Armenian calendar | N/A |
| Assyrian calendar | 4736 |
| Bahá'í calendar | -1858–-1857 |
| Bengali calendar | -607 |
| Berber calendar | 936 |
| English Regnal year | N/A |
| Buddhist calendar | 530 |
| Burmese calendar | -652 |
| Byzantine calendar | 5494–5495 |
| Chinese calendar | 乙巳年 (2622/2682) — to —
丙午年(2623/2683) |
| Coptic calendar | -298–-297 |
| Ethiopian calendar | -22–-21 |
| Hebrew calendar | 3746–3747 |
| Hindu calendars | |
| - Vikram Samvat | 42–43 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3087–3088 |
| Holocene calendar | 9986 |
| Iranian calendar | 636 BP – 635 BP |
| Islamic calendar | 656 BH – 655 BH |
| Japanese calendar | |
| Korean calendar | 2319 |
| Minguo calendar | 1926 before ROC 民前1926年 |
| Thai solar calendar | 529 |
Year 15 BC was either a common year starting on Tuesday, Wednesday or Thursday or a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a common year starting on Monday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Drusus and Piso (or, less frequently, year 739 Ab urbe condita). The denomination 15 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.