The Roman Catholic Diocese of Bonfim (Latin: Dioecesis Bonfimensis) is a diocese in the ecclesiastical province of Feira de Santana in northeastern Brazil.

Its episcopal cathedral is Catedral Senhor do Bonfim, dedicated to Our Lord, in the city of Senhor do Bonfim, Bahia state.

As per 2015, it pastorally served 525,000 Catholics (80.1% of 655,197 total) on 33,747 km² in 25 parishes with 42 priests (22 diocesan, 20 religious), 68 lay religious (21 brothers, 47 sisters) and 15 seminarians .

(all Latin Rite natives)

This article on a Roman Catholic diocese in Brazil is a stub.