Juan Manuel Hermenegildo de la Luz Olivares (April 4, 1760 – March 1, 1797) was a Venezuelan composer from the Colonial era.
In 1784, he began teaching in Caracas, and this same year Pedro Ramón Palacios y Sojo entrusted to him the direction of the Academia del Oratorio de San Felipe de Neri, which he held until his death; he also became organist at the academy's church, the Basílica de Santa Teresa.
On May 11, 1789, he married Sebastiana Velásquez in Caracas at the Church of San Pablo Ermitaño, which stood where the Municipal Theater now stands.
Olivares was the caretaker and teacher of Lino Gallardo.
His Dúo de violines is the only work of chamber music composed in colonial Venezuela which is preserved in its entirety.