Year 276 (CCLXXVI) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Tacitus and Aemilianus (or, less frequently, year 1029 Ab urbe condita). The denomination 276 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.
|Ab urbe condita||1029|
|Balinese saka calendar||197–198|
|Chinese calendar||乙未年 (Wood Goat)|
2972 or 2912
— to —
丙申年 (Fire Monkey)
2973 or 2913
|Coptic calendar||−8 – −7|
|- Vikram Samvat||332–333|
|- Shaka Samvat||197–198|
|- Kali Yuga||3376–3377|
|Iranian calendar||346 BP – 345 BP|
|Islamic calendar||357 BH – 356 BH|
|Minguo calendar||1636 before ROC|
|Seleucid era||587/588 AG|
|Thai solar calendar||818–819|
402 or 21 or −751
— to —
403 or 22 or −750
- Emperor Tacitus doubles the silver content of the aurelianianus, and halves its tariffing to 2.5 d.c., carry the value marks X.I.
- Marcus Annius Florianus defeats the Goths and Alans who have invaded Asia Minor. Tacitus dies of illness or is murdered, at Tyana, Cappadocia.
- Florianus becomes Roman Emperor; he breaks off his campaign against the Heruli, and marches from the Bosporus, with support from the Roman legions in Britain, Gaul, Spain and Italy, to fight an indecisive battle with Marcus Aurelius Probus in Cilicia.
- Florianus holds power for some weeks, but is assassinated by his own troops near Tarsus (Turkey). Probus, age 44, is proclaimed new Emperor of Rome.
- Probus appoints Marcus Aurelius Carus to Prefect of the Praetorian Guard; he returns the aurelianianus to the standard and official tariffing of Aurelian.
- King Bahram I of Persia dies after a 3-year reign, in which the Zoroastrian priests at Ctesiphon (Iran) put pressure on him to persecute Buddhists, Christians, and Manichaeans. He is succeeded by his son Bahram II.
- Mahasena reigns in Ceylon. Orthodox and unpopular, he tries to introduce Mahayana Buddhism to the country.