| Millennium: | 1st millennium |
|---|---|
| Centuries: | 2nd century – 3rd century – 4th century |
| Decades: | 250s 260s 270s – 280s – 290s 300s 310s |
| Years: | 281 282 283 – 284 – 285 286 287 |
| 284 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 284 CCLXXXIV |
| Ab urbe condita | 1037 |
| Armenian calendar | N/A |
| Assyrian calendar | 5034 |
| Bahá'í calendar | -1560–-1559 |
| Bengali calendar | -309 |
| Berber calendar | 1234 |
| English Regnal year | N/A |
| Buddhist calendar | 828 |
| Burmese calendar | -354 |
| Byzantine calendar | 5792–5793 |
| Chinese calendar | 癸卯年十一月廿六日 (2920/2980-11-26) — to —
甲辰年十二月初七日(2921/2981-12-7) |
| Coptic calendar | 0–1 |
| Ethiopian calendar | 276–277 |
| Hebrew calendar | 4044–4045 |
| Hindu calendars | |
| - Vikram Samvat | 340–341 |
| - Shaka Samvat | 206–207 |
| - Kali Yuga | 3385–3386 |
| Holocene calendar | 10284 |
| Iranian calendar | 338 BP – 337 BP |
| Islamic calendar | 348 BH – 347 BH |
| Japanese calendar | |
| Korean calendar | 2617 |
| Minguo calendar | 1628 before ROC 民前1628年 |
| Thai solar calendar | 827 |
Year 284 (CCLXXXIV) 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 Carinus and Numerianus (or, less frequently, year 1037 Ab urbe condita). The denomination 284 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.