| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 2nd century BC – 1st century BC – 1st century |
| Decades: | 90s BC 80s BC 70s BC – 60s BC – 50s BC 40s BC 30s BC |
| Years: | 71 BC 70 BC 69 BC – 68 BC – 67 BC 66 BC 65 BC |
| 68 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 68 BC |
| Ab urbe condita | 686 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1911 – -1910 |
| Bengali calendar | -660 |
| Berber calendar | 883 |
| Buddhist calendar | 477 |
| Burmese calendar | -705 |
| Byzantine calendar | 5441 – 5442 |
| Chinese calendar | 子年 (2569/2629) — to —
[[Sexagenary cycle|]]年(2570/2630) |
| Coptic calendar | -351 – -350 |
| Ethiopian calendar | -75 – -74 |
| Hebrew calendar | 3693 – 3694 |
| Hindu calendars | |
| - Bikram Samwat | -11 – -10 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3034 – 3035 |
| Holocene calendar | 9933 |
| Iranian calendar | 689 BP – 688 BP |
| Islamic calendar | 710 BH – 709 BH |
| Japanese calendar | |
| Korean calendar | 2266 |
| Thai solar calendar | 476 |
Year 68 BC was a year of the pre-Julian calendar.