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|Ab urbe condita||1301|
|Balinese saka calendar||469–470|
|Chinese calendar||丁卯年 (Fire Rabbit)|
3244 or 3184
— to —
戊辰年 (Earth Dragon)
3245 or 3185
|- Vikram Samvat||604–605|
|- Shaka Samvat||469–470|
|- Kali Yuga||3648–3649|
|Iranian calendar||74 BP – 73 BP|
|Islamic calendar||76 BH – 75 BH|
|Minguo calendar||1364 before ROC|
|Seleucid era||859/860 AG|
|Thai solar calendar||1090–1091|
674 or 293 or −479
— to —
675 or 294 or −478
Year 548 (DXLVIII) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. The denomination 548 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.
- June 28 – Empress Theodora I, age 48, dies probably of breast cancer (according to bishop Victor of Tunnuna). Her body is buried in the Church of the Holy Apostles (Constantinople).
- Emperor Justinian I relieves Belisarius from military service, in favour of the 70-year-old Byzantine general Narses.
- Theudigisel, Visigothic general, proclaims himself ruler over the Visigothic Kingdom after King Theudis is murdered.
- Lazic War: King Gubazes II revolts against the Persians, and requests aid from Justinian I. He sends a Byzantine expeditionary force (8,000 men) to Lazica (modern Georgia).
- Gubazes II besieges the fortress of Petra, located on the Black Sea. The Persian army under Mermeroes defeats a small Byzantine force guarding the mountain passes, and relieves Petra.
- Mermeroes stations a garrison of 3,000 men in the stronghold of Petra, and marches to Armenia. The Persians, lacking sufficient supplies, secure the supply routes and plunder Lazica.
- Spring – Battle of the Fields of Cato: The Byzantine army, under John Troglita, crushes the Moorish revolt in Byzacena (Tunisia).
- April 13 – Emperor Lý Nam Đế of Vietnam is killed by Laotian tribesmen, while on retreat from the Hong River Plain. He is succeeded by his elder brother Lý Thiên Bảo.
- Cosmas Indicopleustes, Alexandrian merchant, writes his work Christian Topography. He describes the importance of the spice trade (especially in cloves and sweet aloes) in Ceylon, and the harvesting of pepper in India (approximate date).
- April 13 – Lý Nam Đế, emperor of Vietnam
- June 3 –Clotilde, Christian wife of Clovis I and ancestress of the succeeding Merovingian kings. (b.474)
- June 28 – Theodora I, Byzantine Empress
- Carcasan, king of the Ifuraces (Algeria)
- Chen Daoten, father of Xuan Di (or 549)
- Theudebert I, king of Austrasia (or 547)
- Theudis, king of the Visigoths