1380
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1380 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1380 in poetry | 
| Gregorian calendar | 1380 MCCCLXXX | 
| Ab urbe condita | 2133 | 
| Armenian calendar | 829 ԹՎ ՊԻԹ | 
| Assyrian calendar | 6130 | 
| Balinese saka calendar | 1301–1302 | 
| Bengali calendar | 786–787 | 
| Berber calendar | 2330 | 
| English Regnal year | 3 Ric. 2 – 4 Ric. 2 | 
| Buddhist calendar | 1924 | 
| Burmese calendar | 742 | 
| Byzantine calendar | 6888–6889 | 
| Chinese calendar | 己未年 (Earth Goat) 4077 or 3870 — to — 庚申年 (Metal Monkey) 4078 or 3871 | 
| Coptic calendar | 1096–1097 | 
| Discordian calendar | 2546 | 
| Ethiopian calendar | 1372–1373 | 
| Hebrew calendar | 5140–5141 | 
| Hindu calendars | |
| - Vikram Samvat | 1436–1437 | 
| - Shaka Samvat | 1301–1302 | 
| - Kali Yuga | 4480–4481 | 
| Holocene calendar | 11380 | 
| Igbo calendar | 380–381 | 
| Iranian calendar | 758–759 | 
| Islamic calendar | 781–782 | 
| Japanese calendar | Kōryaku 2 (康暦2年) | 
| Javanese calendar | 1293–1294 | 
| Julian calendar | 1380 MCCCLXXX | 
| Korean calendar | 3713 | 
| Minguo calendar | 532 before ROC 民前532年 | 
| Nanakshahi calendar | −88 | 
| Thai solar calendar | 1922–1923 | 
| Tibetan calendar | 阴土羊年 (female Earth-Goat) 1506 or 1125 or 353 — to — 阳金猴年 (male Iron-Monkey) 1507 or 1126 or 354 | 
Year 1380 (MCCCLXXX) was a leap year starting on Sunday of the Julian calendar.