Ulpiano Díaz (1900–1990) was a Cuban timbalero. He is considered an innovator of the timbales, being the first to add a small cowbell to the setup, and popularizing the abanico. He started his career playing güiro in Félix González's orquesta típica, and rose to prominence as the timbales player of three important charangas: Orquesta de Tata Alfonso, Arcaño y sus Maravillas and Fajardo y sus Estrellas.