| Millennium: | 1st millennium |
|---|---|
| Centuries: | 2nd century – 3rd century – 4th century |
| Decades: | 260s 270s 280s – 290s – 300s 310s 320s |
| Years: | 287 288 289 – 290 – 291 292 293 |
| 290 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 290 CCXC |
| Ab urbe condita | 1043 |
| Armenian calendar | N/A |
| Assyrian calendar | 5040 |
| Bahá'í calendar | -1554–-1553 |
| Bengali calendar | -303 |
| Berber calendar | 1240 |
| English Regnal year | N/A |
| Buddhist calendar | 834 |
| Burmese calendar | -348 |
| Byzantine calendar | 5798–5799 |
| Chinese calendar | 己酉年十二月初四日 (2926/2986-12-4) — to —
庚戌年十一月十三日(2927/2987-11-13) |
| Coptic calendar | 6–7 |
| Ethiopian calendar | 282–283 |
| Hebrew calendar | 4050–4051 |
| Hindu calendars | |
| - Vikram Samvat | 346–347 |
| - Shaka Samvat | 212–213 |
| - Kali Yuga | 3391–3392 |
| Holocene calendar | 10290 |
| Iranian calendar | 332 BP – 331 BP |
| Islamic calendar | 342 BH – 341 BH |
| Japanese calendar | |
| Korean calendar | 2623 |
| Minguo calendar | 1622 before ROC 民前1622年 |
| Thai solar calendar | 833 |
Year 290 (CCXC) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerius and Valerius (or, less frequently, year 1043 Ab urbe condita). The denomination 290 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.