| Centuries: | 3rd century · 4th century · 5th century |
| Decades: | 360s 370s 380s 390s 400s 410s 420s |
| Years: | 388 389 390 391 392 393 394 |
| 391 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 391 CCCXCI |
| Ab urbe condita | 1144 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1453 – -1452 |
| Bengali calendar | -202 |
| Berber calendar | 1341 |
| Buddhist calendar | 935 |
| Burmese calendar | -247 |
| Byzantine calendar | 5899 – 5900 |
| Chinese calendar | 庚寅年十一月初十日 (3027/3087-11-10) — to —
辛卯年十一月十九日(3028/3088-11-19) |
| Coptic calendar | 107 – 108 |
| Ethiopian calendar | 383 – 384 |
| Hebrew calendar | 4151 – 4152 |
| Hindu calendars | |
| - Bikram Samwat | 447 – 448 |
| - Shaka Samvat | 313 – 314 |
| - Kali Yuga | 3492 – 3493 |
| Holocene calendar | 10391 |
| Iranian calendar | 231 BP – 230 BP |
| Islamic calendar | 238 BH – 237 BH |
| Japanese calendar | |
| Korean calendar | 2724 |
| Thai solar calendar | 934 |