Antonio Caldara (1670 – 28 December 1736) was an Italian Baroque composer.
Caldara was the son of a violinist. He became a chorister at St Mark's in Venice, where he learned several instruments, probably under the instruction of Giovanni Legrenzi. In 1699 he relocated to Mantua, where he became maestro di cappella to the inept Charles IV, Duke of Mantua, a pensionary of France with a French wife, who took the French side in the War of the Spanish Succession. Caldara removed from Mantua in 1707, after the French were expelled from Italy, then moved on to Barcelona as chamber composer to Charles VI of Austria, the pretender to the Spanish throne who kept a royal court at Barcelona.