| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 13th century – 14th century – 15th century |
| Decades: | 1330s 1340s 1350s – 1360s – 1370s 1380s 1390s |
| Years: | 1363 1364 1365 – 1366 – 1367 1368 1369 |
| 1366 in topic: |
| Subjects: Archaeology – Architecture – |
| Art – Literature – Music – Science |
| Leaders: State leaders – Colonial governors |
| Category: Establishments – Disestablishments |
| Births – Deaths – Works |
| Gregorian calendar | 1366 MCCCLXVI |
| Ab urbe condita | 2119 |
| Armenian calendar | 815 ԹՎ ՊԺԵ |
| Bahá'í calendar | -478 – -477 |
| Bengali calendar | 773 |
| Berber calendar | 2316 |
| Buddhist calendar | 1910 |
| Burmese calendar | 728 |
| Byzantine calendar | 6874 – 6875 |
| Chinese calendar | 乙巳年十一月二十日 (4002/4062-11-20) — to —
丙午年十一月廿九日(4003/4063-11-29) |
| Coptic calendar | 1082 – 1083 |
| Ethiopian calendar | 1358 – 1359 |
| Hebrew calendar | 5126 – 5127 |
| Hindu calendars | |
| - Bikram Samwat | 1422 – 1423 |
| - Shaka Samvat | 1288 – 1289 |
| - Kali Yuga | 4467 – 4468 |
| Holocene calendar | 11366 |
| Iranian calendar | 744 – 745 |
| Islamic calendar | 767 – 768 |
| Japanese calendar | |
| Korean calendar | 3699 |
| Thai solar calendar | 1909 |
Year 1366 (MCCCLXVI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.