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|346 by topic|
|Ab urbe condita||1099|
|Balinese saka calendar||267–268|
|Chinese calendar||乙巳年 (Wood Snake)|
3042 or 2982
— to —
丙午年 (Fire Horse)
3043 or 2983
|- Vikram Samvat||402–403|
|- Shaka Samvat||267–268|
|- Kali Yuga||3446–3447|
|Iranian calendar||276 BP – 275 BP|
|Islamic calendar||285 BH – 283 BH|
|Minguo calendar||1566 before ROC|
|Seleucid era||657/658 AG|
|Thai solar calendar||888–889|
472 or 91 or −681
— to —
473 or 92 or −680
Year 346 (CCCXLVI) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantius and Claudius (or, less frequently, year 1099 Ab urbe condita). The denomination 346 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.
- In Korea, the Buyeo Kingdom is absorbed by Goguryeo.
- Geunchogo becomes king of the Korean kingdom of Baekje.
- Emperor Constans I uses his influence to secure the return of Athanasius. He is restored as Patriarch of Alexandria, and documents are compiled relating to his expulsion, under the title Apology Against the Arians.
- Macedonius I, Patriarch of Constantinople, is deposed again by Paul I.
- Julius Firmicus Maternus writes De erroribus profanarum religionum.
- The Visigoths are converted to Arianism by Wulfila.
- "List of Rulers of Korea". www.metmuseum.org. Retrieved April 20, 2019.