| Centuries: | 3rd century · 4th century · 5th century |
| Decades: | 310s 320s 330s 340s 350s 360s 370s |
| Years: | 345 346 347 348 349 350 351 |
| 348 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 348 CCCXLVIII |
| Ab urbe condita | 1101 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1496 – -1495 |
| Bengali calendar | -245 |
| Berber calendar | 1298 |
| Buddhist calendar | 892 |
| Burmese calendar | -290 |
| Byzantine calendar | 5856 – 5857 |
| Chinese calendar | 丁未年十一月十四日 (2984/3044-11-14) — to —
戊申年十一月廿五日(2985/3045-11-25) |
| Coptic calendar | 64 – 65 |
| Ethiopian calendar | 340 – 341 |
| Hebrew calendar | 4108 – 4109 |
| Hindu calendars | |
| - Bikram Samwat | 404 – 405 |
| - Shaka Samvat | 270 – 271 |
| - Kali Yuga | 3449 – 3450 |
| Holocene calendar | 10348 |
| Iranian calendar | 274 BP – 273 BP |
| Islamic calendar | 282 BH – 281 BH |
| Japanese calendar | |
| Korean calendar | 2681 |
| Thai solar calendar | 891 |