Georg Christoph Wagenzeil (born 14 October 1690, died 13 August 1758) was a notable German composer and music theorist, primarily associated with the Baroque and early Classical periods. He is recognized for his contributions to sacred music, particularly in the realms of cantatas, oratorios, and church music. Wagenzeil's notable works include his "Missa in C" and various cantatas that reflect the stylistic transitions of his time. His compositions often incorporated elements of both the polyphonic traditions of the Baroque and the emerging homophonic textures that characterized the Classical era. In addition to his compositional work, Wagenzeil made significant contributions to music theory, helping to shape the understanding of harmony and counterpoint during a transformative period in Western music. His writings on music theory provided insights that influenced contemporaries and later generations of musicians. While not as widely known as some of his contemporaries, Wagenzeil's blending of styles and focus on church music have left a lasting impact on the evolution of liturgical music in Germany. His works continue to be studied for their historical significance and musical innovation.