| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 2nd century BC – 1st century BC – 1st century |
| Decades: | 50s BC 40s BC 30s BC – 20s BC – 10s BC 0s BC 0s |
| Years: | 28 BC 27 BC 26 BC – 25 BC – 24 BC 23 BC 22 BC |
| 25 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 25 BC |
| Ab urbe condita | 729 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1868 – -1867 |
| Bengali calendar | -617 |
| Berber calendar | 926 |
| Buddhist calendar | 520 |
| Burmese calendar | -662 |
| Byzantine calendar | 5484 – 5485 |
| Chinese calendar | 乙未年 (2612/2672) — to —
丙申年(2613/2673) |
| Coptic calendar | -308 – -307 |
| Ethiopian calendar | -32 – -31 |
| Hebrew calendar | 3736 – 3737 |
| Hindu calendars | |
| - Bikram Samwat | 32 – 33 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3077 – 3078 |
| Holocene calendar | 9976 |
| Iranian calendar | 646 BP – 645 BP |
| Islamic calendar | 666 BH – 665 BH |
| Japanese calendar | |
| Korean calendar | 2309 |
| Thai solar calendar | 519 |
Year 25 BC was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Silanus (or, less frequently, year 729 Ab urbe condita). The denomination 25 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.