Gustave Doret was a Swiss composer and conductor.
He studied at the Berlin Academy of Music with Joseph Joachim, and then at the Conservatoire de Paris with Théodore Dubois andJules Massenet. His career as a conductor began in 1894 in Paris, where he led the first performance of Debussy's Prélude à l'après-midi d'un faune. He was second conductor of the Concerts d'Harcourt from 1893 to 1895 and director of the Opera-comique in the 1890s and 1900s. He was also the founder of the Théâtre du Jorat, in Mézières.
His two serious operas, heavily indebted to Massenet, were performed in Paris; his light opera and other stage works were far more popular across French-speaking Europe. In 1914, Doret returned to Switzerland and began studying local popular music and folk music traditions. He also wrote for Swiss newspapers and wrote a memoir, Temps et contretemps, published in 1942.
Most of his output was vocal, and included operas, music theatre pieces, one oratorio, choral music, and more than 300 songs. His only instrumental works were two orchestral pieces, a string quartet, and a piano quintet.
Doret died 1943 in Lausanne.