| Centuries: | 3rd century · 4th century · 5th century |
| Decades: | 310s 320s 330s 340s 350s 360s 370s |
| Years: | 344 345 346 347 348 349 349 |
| 347 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 347 CCCXLVII |
| Ab urbe condita | 1100 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1497 – -1496 |
| Bengali calendar | -246 |
| Berber calendar | 1297 |
| Buddhist calendar | 891 |
| Burmese calendar | -291 |
| Byzantine calendar | 5855 – 5856 |
| Chinese calendar | 丙午年十二月初三日 (2983/3043-12-3) — to —
丁未年十一月十三日(2984/3044-11-13) |
| Coptic calendar | 63 – 64 |
| Ethiopian calendar | 339 – 340 |
| Hebrew calendar | 4107 – 4108 |
| Hindu calendars | |
| - Bikram Samwat | 403 – 404 |
| - Shaka Samvat | 269 – 270 |
| - Kali Yuga | 3448 – 3449 |
| Holocene calendar | 10347 |
| Iranian calendar | 275 BP – 274 BP |
| Islamic calendar | 283 BH – 282 BH |
| Japanese calendar | |
| Korean calendar | 2680 |
| Thai solar calendar | 890 |