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|341 by topic|
|Ab urbe condita||1094|
|Balinese saka calendar||262–263|
|Chinese calendar||庚子年 (Metal Rat)|
3037 or 2977
— to —
辛丑年 (Metal Ox)
3038 or 2978
|- Vikram Samvat||397–398|
|- Shaka Samvat||262–263|
|- Kali Yuga||3441–3442|
|Iranian calendar||281 BP – 280 BP|
|Islamic calendar||290 BH – 289 BH|
|Minguo calendar||1571 before ROC|
|Seleucid era||652/653 AG|
|Thai solar calendar||883–884|
467 or 86 or −686
— to —
468 or 87 or −685
Year 341 (CCCXLI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Marcellinus and Probinus (or, less frequently, year 1094 Ab urbe condita). The denomination 341 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 or dates.
- Emperor Constans I bans pagan sacrifices and magic rituals under penalty of death.
- Constans I begins a successful campaign against the Franks.
- Samudragupta, ruler of the Gupta Empire, extends during a decade his kingdom and his influence over most of India. A pillar found at Allahabad sings his praises.
- The Council of Encaenia is held in Antioch.
- Paul I is restored as Patriarch of Constantinople.
- Thousands of Christians are executed at Seleucia in Mesopotamia.
- Coptic Christianity is introduced into Ethiopia by the Syrian apostle Frumentius. He and his colleague Edesius were captured by Ethiopians a year or two ago, and have become civil servants at the Aksumite court of King Ezana. Frumentius becomes the first Bishop of Axum and encourages the Christian merchants present in the country to practise their faith openly.
- Du Lingyang, empress of the Jin Dynasty (b. 321)
- Eusebius of Nicomedia, Patriarch of Constantinople
- Ge Hong (also known as 'Ko Hung'), famous Chinese taoist (approximate date)
- Paul of Thebes, Christian hermit (approximate date)