1734

1734 (MDCCXXXIV) was a common year starting on Friday in the Gregorian calendar and a common year starting on Tuesday in the Julian calendar.

 Events 
 January 8 – Premiere of George Frideric Handel's opera Ariodante at the Royal Opera House, Covent Garden.
 June 17 – French troops take Philippsburg, but the Duke of Berwick is killed
 June 21 – In Montreal in New France, a black slave known by the French name of Marie-Joseph Angélique, was tortured then hanged by the French authorities in a public ceremony that involved her disgrace and the amputation of a hand.
 June 30 – Russian troops take Gdańsk (German: Danzig) which had been besieged since October 1733. Gdańsk is captured after the failure of a French expedition to relieve the city