| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1391 by topic | |
| Leaders | |
| Political entities - State leaders - Religious leaders | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Art and literature | |
| 1391 in poetry | |
| Gregorian calendar | 1391 MCCCXCI |
| Ab urbe condita | 2144 |
| Armenian calendar | 840 ԹՎ ՊԽ |
| Assyrian calendar | 6141 |
| Bengali calendar | 798 |
| Berber calendar | 2341 |
| English Regnal year | 14 Ric. 2 – 15 Ric. 2 |
| Buddhist calendar | 1935 |
| Burmese calendar | 753 |
| Byzantine calendar | 6899–6900 |
| Chinese calendar |
庚午年 (Metal Horse) 4087 or 4027 — to — 辛未年 (Metal Goat) 4088 or 4028 |
| Coptic calendar | 1107–1108 |
| Discordian calendar | 2557 |
| Ethiopian calendar | 1383–1384 |
| Hebrew calendar | 5151–5152 |
| Hindu calendars | |
| - Vikram Samvat | 1447–1448 |
| - Shaka Samvat | 1312–1313 |
| - Kali Yuga | 4491–4492 |
| Holocene calendar | 11391 |
| Igbo calendar | 391–392 |
| Iranian calendar | 769–770 |
| Islamic calendar | 793–794 |
| Japanese calendar |
Meitoku 2 (明徳2年) |
| Javanese calendar | 1304–1305 |
| Julian calendar | 1391 MCCCXCI |
| Korean calendar | 3724 |
| Minguo calendar | 521 before ROC 民前521年 |
| Nanakshahi calendar | −77 |
| Thai solar calendar | 1933–1934 |
Year 1391 (MCCCXCI) was a common year starting on Sunday (link will display full calendar) of the Julian calendar.