Willem de Fesch (1687–1761) was a Dutch composer and violinist, primarily associated with the Baroque genre. He was born in the city of Amsterdam and later settled in England, where he became a prominent figure in the musical community. De Fesch is best known for his contributions to instrumental music, particularly his concertos and chamber works. His notable compositions include a series of violin concertos and sonatas, which showcase his virtuosic style and innovative use of form. His works, such as the "Concertos for Violin and Strings," reflect the influences of both Italian and French Baroque music, blending intricate counterpoint with expressive melodies. Though not as widely recognized as some of his contemporaries, de Fesch played a significant role in the development of the concerto form and contributed to the evolution of violin playing in the 18th century. His music was influential in shaping the tastes of the period, and he is remembered for his skillful compositions that enhanced the repertoire of Baroque string music. His legacy lives on in the study and performance of Baroque music, particularly in the context of the development of the violin as a solo instrument.