Ernesto De Curtis (October 4, 1875 - December 31, 1937) was an Italian composer.
Born in Naples, the son of Giuseppe De Curtis and Elisabetta Minnon, he was a great-grandson of composer Saverio Mercadante and the brother of poet Giambattista De Curtis, with whom he wrote the song "Torna a Surriento". He studied piano and received a diploma from the Conservatory of San Pietro a Maiella in Naples.
He died at Naples in 1937.