304


 * This article is about the year 304 AD. For other uses, see .

Roman Empire

 * The Roman colony of Konstanz is founded.
 * Diocletian issues four edicts aimed at destroying in the Empire.
 * A Triumphal Arch is built for Diocletian in Rome.
 * contracts a fatal illness.

Asia

 * Major (barbarian) uprising in : the   establish the  kingdom, beginning the  era in China.
 * earns its independence from.

Deaths

 * (martyred)
 * (martyred)
 * — (martyred)
 * (possibly )
 * (martyred)
 * (martyred)
 * , n