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Millennium: 1st millennium
293 in various calendars
Gregorian calendar293
Ab urbe condita1046
Assyrian calendar5043
Balinese saka calendar214–215
Bengali calendar−300
Berber calendar1243
Buddhist calendar837
Burmese calendar−345
Byzantine calendar5801–5802
Chinese calendar壬子年 (Water Rat)
2989 or 2929
    — to —
癸丑年 (Water Ox)
2990 or 2930
Coptic calendar9–10
Discordian calendar1459
Ethiopian calendar285–286
Hebrew calendar4053–4054
Hindu calendars
 - Vikram Samvat349–350
 - Shaka Samvat214–215
 - Kali Yuga3393–3394
Holocene calendar10293
Iranian calendar329 BP – 328 BP
Islamic calendar339 BH – 338 BH
Javanese calendar173–174
Julian calendar293
Korean calendar2626
Minguo calendar1619 before ROC
Nanakshahi calendar−1175
Seleucid era604/605 AG
Thai solar calendar835–836
Tibetan calendar阳水鼠年
(male Water-Rat)
419 or 38 or −734
    — to —
(female Water-Ox)
420 or 39 or −733
The four Tetrarchs, Venice
Map of the Roman Empire under the Tetrarchy (293)

Year 293 (CCXCIII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Diocletian and Maximian (or, less frequently, year 1046 Ab urbe condita). The denomination 293 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.


By place[edit]

Roman Empire[edit]

  • March 1 – Emperors Diocletian and Maximian appoint Constantius I and Galerius as Caesars. This is considered the beginning of the Tetrarchy, known as the Quattuor Principes Mundi ("Four Rulers of the World"). (Some sources and scholars date Galerius' elevation to May 21.)
  • Constantius retakes some of the Gallic territories from the usurper Carausius. He conquers the crucial port of Bononia (modern Boulogne).
  • Towards the end of the year, Carausius is murdered by his finance minister Allectus, who proclaims himself the new emperor of Britain.
  • In this or the following year, Constantius defeats the Franks in Batavia (Netherlands).
  • Galerius begins a series of two campaigns in Upper Egypt against the rebel cities of Coptos and Boresis as well as the Blemmyes and Meroitic Nubians.
  • Over the course of his reign, but especially from the time of the Tetrarchy's creation, Diocletian divides the large provinces of the early empire into smaller administrative units, and he groups these new smaller provinces into dioceses. He also accelerates the third-century trend whereby the administration and military of the provinces are increasingly divided between governors and generals (duces) respectively, whereas formerly governors had also been in charge of the legions. This expansion of imperial personnel increases Diocletian's control over the empire and weakens the power of individual officials and officers. Moreover, Diocletian expands the retinues of the individual emperors to have more ministers and secretaries, thus establishing what will become known as the late Roman Consistorium.


  • King Bahram II of the Persian Empire dies after a 17-year reign; his son Bahram III ascends to the throne. After four months, Bahram III's great-uncle Narseh, the king of Persarmenia, marches on the Persian capital Ctesiphon with the support of a faction of the nobility and the eastern Satraps. Bahram is overthrown and Narseh is declared the new King of Kings.


By topic[edit]