Johann Samuel Welter (1749–1820) was a German composer and violinist known for his contributions to the classical music genre, particularly during the late 18th and early 19th centuries. He was primarily active in the regions of Bavaria and Vienna, where he gained recognition for his chamber music and orchestral works. Welter's notable compositions include symphonies, string quartets, and various concertos, with his "Sinfonia in D major" and string quartets being particularly well-regarded. He often infused his works with the stylistic elements of the Classical period, showcasing a blend of elegance and emotional depth that characterized the music of his time. While not as widely recognized as some of his contemporaries, Welter's impact on the development of chamber music and orchestral repertoire in Germany is significant. His works contributed to the evolution of the string quartet and symphony, influencing later composers. Additionally, Welter served as a bridge between the Baroque traditions and the emerging Romantic style, showcasing the transition in musical aesthetics during his lifetime. His legacy, though overshadowed by more prominent figures, remains important in the context of early classical music history.