Johann Heinrich Buttstett (c. 1660 – after 1717) was a German composer, organist, and music theorist, primarily associated with the Baroque genre. Born in the Thuringian region, he served as an organist in various churches, notably in the city of Erfurt. Buttstett is best known for his theoretical work, "Musicae Practicae" (1700), which provided insights into music theory and composition during the Baroque period. His contributions to organ music include a collection titled "Die Paradoxa," characterized by intricate counterpoint and virtuosic passages. His compositions often highlighted the capabilities of the organ, reflecting the Baroque fascination with elaborate ornamentation and expressive depth. Although Buttstett's music did not achieve the widespread fame of contemporaries like Johann Sebastian Bach, his theoretical writings influenced the study of music and provided a foundation for later composers. His emphasis on the technical aspects of performance and composition contributed to the evolution of organ music and the understanding of Baroque harmony. Overall, Buttstett's work represents a significant, albeit niche, part of the rich tapestry of early Baroque music.