Louis (Ludwig) Alexander Balthasar Schindelmeisser was a nineteenth-century German clarinetist, conductor and composer. He was born Königsberg, Prussia, and studied in Berlin and Leipzig. He was an early and enthusiastic partisan of Richard Wagner, arranging his first performances in Wiesbaden and Darmstadt of Tannhäuser, of which he conducted the premiere, Rienzi and Lohengrin.