Gaetano Mignani (31 August 1882 – 29 January 1973) was an Italian prelate of the Catholic Church. He served as Apostolic vicar of Kianfu (Ji'an Prefecture), he became the first Catholic Bishop of the Roman Catholic Diocese of Ji'an when the region was elevated to a diocese in 1946, a position he would hold until 1951, when the new Communist government expelled him from the country.