Guillaume Louis Cottrau (10 August 1797 â 31 October 1847) was a French-Italian composer and music publisher.
Having moved to Naples with his father who served Joachim Murat, the King of Naples, Cottrau undertook the publication of , a collection of Neapolitan songs, some of his compositions. Thanks to this, the genre crossed the borders of the kingdom and reached great diffusion and popularity abroad.
One of his themes was taken up by Franz Liszt for his "" included in . His son Teodoro Cottrau was also a composer.