Manuel de Roda y Arrieta, (5 February 1708 in Zaragoza – 30 August 1782 at Real Sitio de San Ildefonso), was Ambassador in Rome under King Ferdinand VI of Spain and then nominated by King Charles III of Spain, half-brother of Ferdinand VI and formerly King of Naples and Sicily till the death of his half-brother Ferdinand, Ministry of "Grace and Justice", which he held for 17 years.