284

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

Year 284 (CCLXXXIV) was a leap year starting on Tuesday of the Julian calendar.

Events[change]

The Bagaudae, a group of peasants, revolt in Gaul against the Roman Empire. The Dardani, a region in Illyria, becomes a Roman province.
Emperor Numerian travels through Bithynia (Asia Minor). He is murdered on his way home to Rome.
November 20 – Gaius Aurelius Valerius Diocletianus, age 39, is made emperor.
Sabinus Julianus, Roman usurper against Emperor Carinus, revolts in Pannonia. He attacks northern Italy and makes himself emperor.
Winter – Diocletianus moves with his army across the Balkans.