Jean-Baptiste Sébastien Bréval (1753–1823) was a French composer and cellist, primarily known for his contributions to chamber music and pedagogical works for the cello. He was a prominent figure in the late Classical and early Romantic periods, with a style that bridged the two. Bréval's most notable works include his six cello sonatas and a variety of chamber music compositions, including string quartets and quintets. His compositions often feature lyrical melodies and rich harmonies, reflecting the evolving tastes of his time. He was also known for his educational contributions, having published several instructional methods for cello, which were influential in developing cello pedagogy. Bréval's impact on music lies in his role as a transitional figure in the evolution of cello technique and repertoire. His works are appreciated for their musicality and technical demands, influencing subsequent generations of cellists. While he may not be as widely recognized today, his contributions helped lay the groundwork for the Romantic cello repertoire and education, making him an important figure in the history of classical music.