Don Camillo Carlo Luigi dei Principi Ruspoli (16 January 1865 in Florence – 7 November 1944 in Florence) was an Italian and Spanish aristocrat, son of Luigi Ruspoli y Godoy, 3rd Marquis of Boadilla del Monte and second wife Donna Emilia, Nobile Landi. He was 4th Marqués de Boadilla del Monte with a Coat of Arms of Ruspoli (Letter of 28 March 1894) and Prince of the Holy Roman Empire.