Antonio Fatati (c. 1410 – 9 January 1484) was an Italian Roman Catholic bishop who served as the Bishop for Ancona e Umana from 3 November 1463 until his death. Fatati also served as a bishop in both Teramo and Siena; he was an assistant bishop in the latter position to Cardinal Francesco Todeschini Piccolomini (the future Pope Pius III and the nephew to the then-Pope Pius II). He also happened to secure favor from various popes due to his work and important positions within the Papal States; his positions included treasurer and canon among others.