Louis-Abet Deffroy de Reigny (c. 1700–1762) was a French composer and violinist primarily associated with the Baroque genre. He is best known for his contributions to instrumental music, particularly through his collection of violin sonatas and chamber music. His notable works include "Six Sonates à Violon seul avec la Basse Continue" (1735), which showcases the virtuosic capabilities of the violin and emphasizes expressive melodies. De Reigny was part of the rich tradition of French violin composition, and his works reflect the stylistic characteristics of the French Baroque, including ornamentation and a focus on lyrical lines. His compositions contributed to the development of violin techniques and the evolving chamber music repertoire of the time. While not as widely recognized as some of his contemporaries, such as Jean-Marie Leclair, De Reigny's music influenced the subsequent generation of composers and violinists. His works are occasionally performed today, helping to preserve the legacy of French Baroque music within the context of early instrumental performance.