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Year 1457 (MCDLVII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.

• February 11 – After years of captivity and absence from the Ming throne, the Zhengtong Emperor of China is reinstated, as the Tianshun Emperor.
• February 24 – Charles VIII of Sweden is declared deposed. The Archbishop of Sweden, Jöns Bengtsson Oxenstierna, and statesman Erik Axelsson Tott become co-regents of Sweden. The throne is then offered to Christian I of Denmark and Norway.
• March 6 – King James II of Scotland decrees that ". . . ye futebawe and ye golf be uterly cryt done and not usyt . . ", the first historical mention of the game of golf.
• April 12 – Ştefan cel Mare secures the throne of Moldavia, which he retains for the next 47 years.
• June 23 – Christian I is elected king of Sweden, ending the war between Sweden and Denmark and restoring the Kalmar Union.
• June 29 – The Dutch city of Dordrecht is devastated by fire.^[1]
• August 14 – The Mainz Psalter, the second major book printed with movable type in the West, the first to be wholly finished mechanically (including colour), and the first to carry a printed date, is printed for the Elector of Mainz.
• September 2 – Battle of Ujëbardha: One of Skanderbeg's most important victories is won against the Ottoman army, in the open field.

• Albrechts University is founded at Freiburg im Breisgau.
• Edo Castle is built by Ōta Dōkan in modern-day Tokyo.

• January 18 – Antonio Trivulzio, seniore, Roman Catholic cardinal (d. 1508)
• January 28 – King Henry VII of England (d. 1509)^[2]
• February 2 – Peter Martyr d'Anghiera, Italo-Spanish historian and diplomat (d. 1526)
• February 13 – Mary of Burgundy, sovereign duchess regnant of Burgundy, married to Maximilian I, Holy Roman Emperor (d. 1482)
• August 20 – Seongjong of Joseon, King of Joseon (d. 1494)
• September 21 – Hedwig Jagiellon, Duchess of Bavaria, Polish princess (d. 1502)
• November 16 – Beatrice of Naples, Hungarian queen (d. 1508)
• date unknown
  • Jacob Obrecht, Dutch composer (d. 1505)
  • George Nevill, Duke of Bedford (d. 1483)
• probable
  • Sebastian Brant, German humanist and satirist (d. 1521)^[3]
  • Filippino Lippi, Florentine painter (d. 1504)^[4]
  • Thomas West, 8th Baron De La Warr (d. 1525)

• March 14 – Jingtai Emperor of China (b. 1428)
• March 16 – László Hunyadi, Hungarian statesman and warrior (b. 1433)^[5]
• May 22 – Saint Rita of Cascia, Italian saint (b. 1381)
• August 1 – Lorenzo Valla, Italian humanist
• August 19 – Andrea del Castagno, Italian painter (b. 1421)
• September 12 – Gabriele Sforza, Archbishop of Milan (b. 1423)^[6]
• September 14 – Countess Palatine Margaret of Mosbach, countess consort of Hanau (b. 1432)
• September 22 – Peter II, Duke of Brittany (b. 1418)
• November 3 – Ludwig II, Count of Württemberg-Urach, German noble (b. 1439)
• November 23 – King Ladislaus Posthumus of Bohemia and Hungary (b. 1440)
• December 24 – Danjong of Joseon, King of Joseon (b. 1441)
• date unknown
  • Abul-Qasim Babur Mirza, ruler of Khurasan (b. 1422)
  • Bartolomeu Perestrello, Portuguese navigator and explorer (b. 1395)