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|407 by topic|
|Ab urbe condita||1160|
|Balinese saka calendar||328–329|
|Chinese calendar||丙午年 (Fire Horse)|
3103 or 3043
— to —
丁未年 (Fire Goat)
3104 or 3044
|- Vikram Samvat||463–464|
|- Shaka Samvat||328–329|
|- Kali Yuga||3507–3508|
|Iranian calendar||215 BP – 214 BP|
|Islamic calendar||222 BH – 221 BH|
|Minguo calendar||1505 before ROC|
|Seleucid era||718/719 AG|
|Thai solar calendar||949–950|
533 or 152 or −620
— to —
534 or 153 or −619
Year 407 (CDVII) was a common 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 FROM HONORIUS AND THEODOSIUS (or, less frequently, year 1160 Ab urbe condita). The denomination 407 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.
- Gratian, Roman usurper, is installed as emperor after the death of Marcus. According to Orosius, he is a native Briton of urban aristocracy.
- Gratian is assassinated and Constantine III, a general (magister militum), declares himself Roman emperor. To extend his dominion over Gaul and Spain, he takes practically all the Roman garrisons from Britain and crosses the English Channel. Constantine occupies Arles and establishes tenuous authority over Gaul, sharing control with marauding "barbarians". This is generally seen as the beginning of Rome's withdrawal from Britain.
- End of Roman rule in Britain: After 360 years of occupation, the local regional British-Roman leaders raise their own levies for defence against Saxon sea rovers. They cultivate oysters, having learned the technique from the Romans.
- Gaul is invaded by Germanic Vandals and Suebi, and Alans.
- Murong Xi, emperor of the Xianbei state Later Yan (b. 385)
- Fu Xunying, empress of the Xianbei state Later Yan
- John Chrysostom, archbishop of Constantinople
- Maria, empress consort and wife of Honorius
- Victricius, missionary and bishop of Rouen (approximate date)