The Diocese of Fondi or Diocese of Fundi (Latin: Dioecesis Fundana) was a Roman Catholic diocese located in the town of Fondi in the province of Latina, Lazio, central Italy. In 1818, it was suppressed to the Diocese of Gaeta. It was restored as a Titular Episcopal See in 1968.
Erected: 237
Metropolitan: Archdiocese of Capua
1818: Suppressed to the Diocese of Gaeta