Famous birthdays, deaths and events of 1751
- January 12 - Ferdinand I of the Two Sicilies, (d. 1825)
- February 20 - Johann Heinrich Voß, German poet (d. 1826)
- July 11 - Caroline Matilda of Wales, queen consort of Denmark and Norway (d. 1775)
- July 30 - Maria Anna Mozart, Austrian musician (d. 1829)
- October 16 - Frederika Louisa of Hesse-Darmstadt, Queen of Prussia (d. 1805)
- October 30 - Richard Sheridan, Irish playwright (d. 1816)
- December 9 - Maria Luisa of Parma, queen of Charles IV of Spain (d. 1819)
- January 17 - Tomaso Albinoni, Italian composer (b. 1671)
- February 9 - Henri François d'Aguesseau, Chancellor of France (b. 1668)
- March 21 - Johann Heinrich Zedler, German publisher (b. 1706)
- March 25 - Frederick I of Sweden, (b. 1676)
- October 22 - William IV, Prince of Orange (b. 1711)
- May 1 - The first cricket match is played in America.
- December 14 - The Theresian Military Academy is founded as the first Military Academy in the world.