| Millennium: | 1st millennium BC |
|---|---|
| Centuries: | 2nd century BC – 1st century BC – 1st century |
| Decades: | 120s BC 110s BC 100s BC – 90s BC – 80s BC 70s BC 60s BC |
| Years: | 101 BC 100 BC 99 BC – 98 BC – 97 BC 96 BC 95 BC |
| 98 BC by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 98 BC |
| Ab urbe condita | 656 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1941 – -1940 |
| Bengali calendar | -690 |
| Berber calendar | 853 |
| Buddhist calendar | 447 |
| Burmese calendar | -735 |
| Byzantine calendar | 5411 – 5412 |
| Chinese calendar | [[Sexagenary cycle|]]年 (2539/2599) — to —
[[Sexagenary cycle|]]年(2540/2600) |
| Coptic calendar | -381 – -380 |
| Ethiopian calendar | -105 – -104 |
| Hebrew calendar | 3663 – 3664 |
| Hindu calendars | |
| - Bikram Samwat | -41 – -40 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3004 – 3005 |
| Holocene calendar | 9903 |
| Iranian calendar | 719 BP – 718 BP |
| Islamic calendar | 741 BH – 740 BH |
| Japanese calendar | |
| Korean calendar | 2236 |
| Thai solar calendar | 446 |
Year 98 BC was a year of the pre-Julian calendar.