Georg Caspar Weckler (c. 1715–1777) was a German composer and musician primarily associated with the Baroque and early Classical periods. His work is notable for its contributions to the development of keyboard music, particularly in the context of the emerging sonata form. Weckler's genre mainly encompasses instrumental music, with a focus on harpsichord and organ compositions. He is best known for his keyboard sonatas, which showcase intricate counterpoint and expressive melodies. His notable works include a collection of harpsichord sonatas, which reflect the stylistic transition between the late Baroque and early Classical idioms. Weckler's impact on music lies in his role as a bridge between established Baroque traditions and the evolving Classical style. Though not as widely recognized as contemporaries like Johann Sebastian Bach or Carl Philipp Emanuel Bach, his contributions to keyboard music influenced subsequent composers and helped to shape the repertoire for the harpsichord and early piano. His works are studied for their technical demands and musicality, revealing the complexities of the transitional period in Western music history.