| Years: 1378 1379 1380 - 1381 - 1382 1383 1384 | |
| Decades: 1350s 1360s 1370s - 1380s - 1390s 1400s 1410s | |
| Centuries: 13th century - 14th century - 15th century | |
| Gregorian calendar | 1381 MCCCLXXXI |
| Ab urbe condita | 2134 |
| Armenian calendar | 830 ԹՎ ՊԼ |
| Assyrian calendar | 6131 |
| Balinese saka calendar | 1302–1303 |
| Bengali calendar | 787–788 |
| Berber calendar | 2331 |
| English Regnal year | 4 Ric. 2 – 5 Ric. 2 |
| Buddhist calendar | 1925 |
| Burmese calendar | 743 |
| Byzantine calendar | 6889–6890 |
| Chinese calendar | 庚申年 (Metal Monkey) 4078 or 3871 — to — 辛酉年 (Metal Rooster) 4079 or 3872 |
| Coptic calendar | 1097–1098 |
| Discordian calendar | 2547 |
| Ethiopian calendar | 1373–1374 |
| Hebrew calendar | 5141–5142 |
| Hindu calendars | |
| - Vikram Samvat | 1437–1438 |
| - Shaka Samvat | 1302–1303 |
| - Kali Yuga | 4481–4482 |
| Holocene calendar | 11381 |
| Igbo calendar | 381–382 |
| Iranian calendar | 759–760 |
| Islamic calendar | 782–783 |
| Japanese calendar | Kōryaku 3 / Eitoku 1 (永徳元年) |
| Javanese calendar | 1294–1295 |
| Julian calendar | 1381 MCCCLXXXI |
| Korean calendar | 3714 |
| Minguo calendar | 531 before ROC 民前531年 |
| Nanakshahi calendar | −87 |
| Thai solar calendar | 1923–1924 |
| Tibetan calendar | ལྕགས་ཕོ་སྤྲེ་ལོ་ (male Iron-Monkey) 1507 or 1126 or 354 — to — ལྕགས་མོ་བྱ་ལོ་ (female Iron-Bird) 1508 or 1127 or 355 |
Events
- June 12 - Peasants' Revolt: In England, rebels from Kent and Essex, lead by Wat Tyler and Jack Straw, meet at Blackheath. There the rebels are encouraged by a sermon by renegade priest, John Ball.
- June 14 - Rebels destroy John of Gaunt's Savoy Palace and storm the Tower of London, killing the Archbishop of Canterbury and the Lord Chancellor. King Richard II of England meets the leaders of Peasants Revolt and agrees to reforms such as fair rents and the abolition of serfdom.
- June 15 - During further negotiations, Wat Tyler is murdered by the King's entourage. Noble forces subsequently overpower the rebel army. The rebel leaders are eventually captured and executed and Richard II revokes his concessions.
- The revolt is discussed in John Gower's Vox Clamantis and Froissart's Chronicles.
- Kęstutis overthrows his nephew, Jogaila, as Grand Duke of Lithuania. Jogaila is allowed to remain as governor of eastern Lithuania.
- Due to Joan I of Naples' support for Antipope Clement VII, Pope Urban VI bestows Naples upon Charles of Durazzo. With the help of the Hungarians, Charles advances on Naples and imprisons Joan.
Births
- May 9 - Johann Schiltberger, German traveller and writer (died 1440)
- October 13 - Thomas FitzAlan, 12th Earl of Arundel, English politician (died 1415)
- John I, Duke of Bourbon (died 1434)
- Saint Rita of Cascia (died 1457)
Deaths
- March 24 - Catherine of Sweden, Swedish saint
- May 15 - Eppelein von Gailingen, German robber baron
- June 14 - Simon Sudbury, Archbishop of Canterbury
- June 15 - John Cavendish, Lord Chief Justice of England
- December 2 - John of Ruysbroeck, Flemish mystic
- December 27 - Edmund de Mortimer, 3rd Earl of March, English politician
- Wat Tyler, English rebel