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This article is about the year 343. For the number (and other uses), see 343 (number). For the New York fireboat, see Three Forty Three.
Millennium: 1st millennium
Centuries: 3rd century4th century5th century
Decades: 310s  320s  330s  – 340s –  350s  360s  370s
Years: 340 341 342343344 345 346
343 by topic
State leadersSovereign states
Birth and death categories
Establishment and disestablishment categories
343 in other calendars
Gregorian calendar 343
Ab urbe condita 1096
Assyrian calendar 5093
Bengali calendar −250
Berber calendar 1293
Buddhist calendar 887
Burmese calendar −295
Byzantine calendar 5851–5852
Chinese calendar 壬寅(Water Tiger)
3039 or 2979
    — to —
癸卯年 (Water Rabbit)
3040 or 2980
Coptic calendar 59–60
Discordian calendar 1509
Ethiopian calendar 335–336
Hebrew calendar 4103–4104
Hindu calendars
 - Vikram Samvat 399–400
 - Shaka Samvat 265–266
 - Kali Yuga 3444–3445
Holocene calendar 10343
Iranian calendar 279 BP – 278 BP
Islamic calendar 288 BH – 287 BH
Julian calendar 343
Korean calendar 2676
Minguo calendar 1569 before ROC
Seleucid era 654/655 AG
Thai solar calendar 885–886

Year 343 (CCCXLIII) was a common 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 Memmius and Romulus (or, less frequently, year 1096 Ab urbe condita). The denomination 343 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]

By topic[edit]


  • Pope Julius I tries to unite the Western bishops against Arianism by convoking the Council of Sardica (later Sofia), which acknowledges the pope's supreme authority and grants him the right to judge cases involving the legal possession of episcopal sees, but only Western and Egyptian bishops attend, and Arianism remains strong.




The number of firefighters that died on 9/11/2001