1376

1376 (MCCCLXXVI) was a leap year starting on Tuesday of the Julian calendar, the 1376th year of the Common Era (CE) and Anno Domini (AD) designations, the 376th year of the 2nd millennium, the 76th year of the 14th century, and the 7th year of the 1370s decade. As of the start of 1376, the Gregorian calendar was 8 days ahead of the Julian calendar, which was the dominant calendar of the time.

• March – The peace treaty between England and France is extended until April of 1377.
• April 28 – The start of Good Parliament in England, so called because its members attempted to reform the corrupt Royal Council.
• June 7 – The dying Prince Edward summons his father Edward III and brother John of Gaunt and makes them swear to uphold the claim to the throne of his son Richard.
• June 8 – Edward, the Black Prince dies, becoming the first English Prince of Wales to not rule as king.
• July 10 – The Good Parliament is dissolved. At that time, it was the longest Parliament to have sat in England.
• August 12 – With the help of the Genoese, Byzantine co-emperor Andronicus IV Palaeologus invades Constantinople and dethrones his father, John V Palaeologus, as co-emperor. John V Palaeologus is taken prisoner.
• September – John of Gaunt summons religious reformer John Wycliffe to appear before the Royal Council to defend Gaunt from bishops who have become his enemies.
• Fall – John of Gaunt, through the Royal Council, proceeds to undo the work of the Good Parliament.
• December 25 – John of Gaunt presents his nephew, Prince Richard of Bordeaux, to the feudatories of the realm and swears to uphold Richard's right to succeed Edward III.
• Khan Qamar al-din of Mongolistan unsuccessfully invades Timur’s eastern province of Farghana.
• Timur leads his army against troops of the White Horde which have arrived at Sighnaq. However, winter sets in, preventing an immediate battle.
• Dmitri Donskoi of Moscow raids Mongol ruled Volga Bulgaria (now in Russia).
• Acamapichtli is elected Tlatoani of the Aztec empire after the death of Tenoch, the first Aztec ruler.
• Catherine of Siena visits Pope Gregory XI in Avignon to attempt to persuade him to make peace with Florence and move the Papacy back to Rome.
• Olaf III becomes King of Denmark after the death of his grandfather, Valdemar IV, in 1375.
• The city of Sredets in Bulgaria is renamed Sofia after the Church of St Sophia
• Mamluk Sultan of Egypt Nasir-ad-Din Shaban II is succeeded by Alah-ad-Din Ali.
• Qutbuddin succeeds his brother, Shahabuddin, as Sultan of Kashmir.

• December 25 – Geoffrey Chaucer goes abroad on secret state business in the company of Sir John Burley.

• 22nd July – Fabled date of the appearance of the Pied Piper of Hamelin.

• November 9 – Edmund Mortimer, English rebel (died 1409)
• Gihwa, Scholar in Korean Buddhism

• January 24 – Richard FitzAlan, 10th Earl of Arundel, English military leader
• June 8 – Edward, the Black Prince, son of King Edward III of England (born 1330)
• Simon Langham, Archbishop of Canterbury
• Tenoch, Aztec ruler