Rodolphe Kreutzer (15 November 1766 – 6 January 1831) was a French violinist, teacher, conductor, and composer of forty French operas. He is probably best known as the dedicatee of Beethoven s Violin Sonata No. 9 in A major, Op. 47 (1803), though he never played the work, declaring it unplayable and incomprehensible.