| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 2nd century BC – 1st century BC – 1st century |
| Decades: | 110s BC 100s BC 90s BC – 80s BC – 70s BC 60s BC 50s BC |
| Years: | 88 BC 87 BC 86 BC – 85 BC – 84 BC 83 BC 82 BC |
| 85 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 85 BC |
| Ab urbe condita | 669 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1928 – -1927 |
| Bengali calendar | -677 |
| Berber calendar | 866 |
| Buddhist calendar | 460 |
| Burmese calendar | -722 |
| Byzantine calendar | 5424 – 5425 |
| Chinese calendar | [[Sexagenary cycle|]]年 (2552/2612) — to —
[[Sexagenary cycle|]]年(2553/2613) |
| Coptic calendar | -368 – -367 |
| Ethiopian calendar | -92 – -91 |
| Hebrew calendar | 3676 – 3677 |
| Hindu calendars | |
| - Bikram Samwat | -28 – -27 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3017 – 3018 |
| Holocene calendar | 9916 |
| Iranian calendar | 706 BP – 705 BP |
| Islamic calendar | 728 BH – 727 BH |
| Japanese calendar | |
| Korean calendar | 2249 |
| Thai solar calendar | 459 |
Year 85 BC was a year of the pre-Julian calendar.