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|Ab urbe condita||2181|
|Balinese saka calendar||1349–1350|
|English Regnal year||6 Hen. 6 – 7 Hen. 6|
|Chinese calendar||丁未年 (Fire Goat)|
4124 or 4064
— to —
戊申年 (Earth Monkey)
4125 or 4065
|- Vikram Samvat||1484–1485|
|- Shaka Samvat||1349–1350|
|- Kali Yuga||4528–4529|
|Japanese calendar||Ōei 35 / Shocho 1|
|Minguo calendar||484 before ROC|
|Thai solar calendar||1970–1971|
1554 or 1173 or 401
— to —
1555 or 1174 or 402
|Wikimedia Commons has media related to 1428.|
- February 2 – 1428 Catalonia earthquake. The earthquake took place during Candlemas, struck the region of Catalonia, especially Roussillon, with an epicentre near Camprodon. The earthquake was one of a series of related seismic events that shook Catalonia in a single year. Beginning on 23 February 1427, tremors were felt in March, April, 15 May at Olot.
- June 3 – Dan II leads an army against the Ottomans at Golubac Fortress, obtaining a treaty that will allow him a semi-peaceful rule in Wallachia, until 1432.
- August 30 – Emperor Go-Hanazono accedes to the throne of Japan.
- October 12 – English forces under Thomas Montacute, 4th Earl of Salisbury, besiege Orléans. Jean de Dunois, the Bastard of Orléans, commands the defenders.
- October 24 – Thomas Montacute, 4th Earl of Salisbury, is mortally wounded in an unsuccessful assault on Orléans. He is succeeded in command by William de la Pole, 4th Earl of Suffolk.
- Itzcóatl becomes 1st emperor of the Aztec Empire.
- The Aztec Triple Alliance (also known as The Aztec Empire) forms with the alliance of three Aztec city-states—Tenochtitlán, Texcoco, and Tlacopán—and defeats Azcapotzalco to win control of the Valley of Mexico.
- The Valais witch trials begin. 
- A serious fire occurs at Baynard's Castle in London, England.
- Voices tell Joan of Arc that Charles VII of France must be crowned, and the English expelled from France.
- Lam Sơn uprising: Lê Lợi, founder of the Lê Dynasty in Vietnam, liberates Annam (the territory occupied by Ming Dynasty China in 1407), and restores the kingdom as Đại Việt.
- February 3 – Helena Palaiologina, Queen of Cyprus (d. 1458)
- April 7 – William Percy, late medieval Bishop of Carlisle (d. 1462)
- May 3 – Pedro González de Mendoza, Spanish cardinal and statesman (d. 1495)
- July 4 – Filippo Strozzi the Elder, Italian banker (d. 1491)
- September 21 – Jingtai Emperor of China (d. 1457)
- November 2 – Yolande, Duchess of Lorraine (d. 1483)
- November 22 – Richard Neville, 16th Earl of Warwick, English kingmaker (d. 1471)
- December 4 – Bernard VII, Lord of Lippe (1429–1511) (d. 1511)
- date unknown – Donato Acciaioli, Italian scholar (d. 1478)
- Maria Ormani, Italian artist, scribe and illuminator
- probable – Didrik Pining, German explorer (approximate date)
- January 4 – Frederick I, Elector of Saxony (b. 1370)
- February 3 – Ashikaga Yoshimochi, Japanese shōgun (b. 1386)
- June 12 – Zawisza Czarny, Polish knight and diplomat
- August 27 – John I of Münsterberg, Duke of Ziebice (b. 1370)
- August 30 – Emperor Shōkō, emperor of Japan (b. 1401)
- Autumn – Masaccio, Italian painter (b. 1401)
- November 3 – Thomas Montacute, 4th Earl of Salisbury, English military leader (mortally wounded in battle) (b. 1388)
- November 4 – Sophia of Bavaria, Queen regent of Bohemia (b. 1376)
- date unknown
- probable – John Purvey, English theologian (b. 1353)
- Joan Toralles described the Olot quake in a brief notice in his Noticiari.
- Burns, William E. (2003). Witch Hunts in Europe and America: An Encyclopedia. Greenwood Publishing Group. p. 296. ISBN 9780313321429.
- Richardson, John (2000). The Annals of London: A Year-by-year Record of a Thousand Years of History. University of California Press. p. 63. ISBN 9780520227958.
- "Saint Joan of Arc | French heroine". Encyclopedia Britannica. Retrieved May 6, 2019.