Diocletian (disambiguation)

Diocletian was a Roman emperor who ruled from 284–305 AD.

Diocletian may also refer to:

Architecture

 * Aqueduct of Diocletian, a Roman aqueduct near Split, Croatia
 * Baths of Diocletian, a bath complex in Rome, Italy
 * Camp of Diocletian, a military complex at Palmyra, Syria
 * Diocletian's Palace, an ancient fortress which forms the core of the modern town of Split, Croatia
 * Diocletian window, large windows characteristic of Ancient Roman bath complexes

Other uses

 * Diocletian (band), a war metal band from New Zealand
 * Dioclesian, a tragicomic semi-opera by Henry Purcell