Karl Klindworth (25 September 1830 – 27 July 1916) was a German composer, pianist, conductor, violinist and music publisher. He was one of Franz Liszt's pupils and later one of his closest disciples and friends, being also on friendly terms with composer Richard Wagner, of whom he was an admirer. He was highly praised by fellow musicians, including Wagner himself and Edward Dannreuther. Among his pupils were Hans von Bülow, Georgy Catoire, Ethelbert Nevin and William Mason.