Frédéric-Adolphe-Maximilien-Gustave Salvemini de Castillon (Utrecht, Netherlands, 22 September 1747 - Berlin 27 January 1814) was a Music theorist. His father was the professor Giovanni Francesco Salvemini, who taught mathematics and philosophy at the University of Utrecht. Giovanni adopted the name "de Castillon" in reference to his natal town of Castiglione in Tuscany, Italy. Member of the Berlin Academy, Castillon published a large volume of Research of the Beauty of applied music to, melody, harmony, and rhythm.