Year 1326 (MCCCXXVI) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.
10 February–11 March – Raid on Brandenburg: Allied forces of the Kingdom of Poland led by Władysław I the Elbow-high and of the Grand Duchy of Lithuania led by the pagan Gediminas raid Louis V of Germany's Margraviate of Brandenburg (within the Holy Roman Empire) with the sanction of Pope John XXII.
19 April – A peace treaty in the peasant revolt in Flanders 1323-1328 is ratified.
3 June – The Treaty of Novgorod delineates the border between Russia and Norway in Finnmark.
24 September – The invasion of England.
October – Ibn Battuta reaches Mecca.
Orhan I succeeds Osman I on the throne of the Ottoman Empire.
Ingeborg of Norway is deposed from political power in Sweden.
The use of the word "cannon" is first recorded in reference to a firearm.
Foundation of Clare College, the University of Cambridge's second oldest (still surviving) college.
The foundation of Oriel College, the University of Oxford's fifth oldest (still surviving) college, is confirmed by royal charter.
March 5 – King Louis I of Hungary (d. 1382)
March 30 – Ivan II of Russia, Grand Duke of Muscovy (d. 1359)
May 1 –Rinchinbal Khan, Emperor Ningzong of Yuan (d. 1332)
May 8 – Joanna I of Auvergne, queen consort of France (d. 1360)
June 29 – Murad I, Ottoman sultan (d. 1389)
date unknown
Olivier de Clisson (The Butcher), French soldier (d. 1407)
Robert of Durazzo, Neapolitan nobleman (d. 1356)
Prince Narinaga, Japanese Shogun (died in either 1337 or 1344, the sources are contradictory).
Imagawa Sadayo, Japanese poet and soldier (d. 1420)
Isaac ben Sheshet, Spanish Talmudic authority (d. 1408)
probable
Manuel Kantakouzenos, despot of Morea (d. 1380)
Seii, King of Chuzan (d. 1349)
January 18 – Robert FitzWalter, 1st Baron FitzWalter, English baron (b. 1247)
February 28 – Duke Leopold I of Austria (b. 1290)
March 26 – Alessandra Giliani, anatomist (b. c. 1307)
April 9 – Walter Stewart, 6th High Steward of Scotland (b. 1293)
April 29 – Blanche of Burgundy, queen consort of France (b. c. 1296)
May 31 – Maurice de Berkeley, 2nd Baron Berkeley, English rebel baron (b. 1271)
July 29 – Richard Óg de Burgh, 2nd Earl of Ulster (b. 1259)
October 15 – Walter de Stapledon, English bishop (b. 1261)
October 27 – Hugh le Despenser, 1st Earl of Winchester (executed; b. 1262)
November 17 – Edmund FitzAlan, 9th Earl of Arundel, English politician (b. 1285)
November 25 – Prince Koreyasu, Japanese shogun (b. 1264)
November 24 – Hugh the younger Despenser, English knight (executed; b. 1286)
December 20 – Peter, Metropolitan of Moscow
December 28 – Sir David II Strathbogie, Earl of Atholl, Constable of Scotland, and Chief Warden of Northumberland
date unknown
Mondino de Liuzzi, Italian anatomist (born c. 1270)
Osman I, founder of the Ottoman Empire (b. 1258)
John Palaiologos, Byzantine nobleman (b. 1288/89)
Ser Petracco, notary public of the Republic of Florence, father of Petrarch (b. 1267)
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