The Cathedral was the seat of the Bishop of Fréjus, until in 1957 the see was united with that of Toulon to form the present Diocese of Fréjus-Toulon, with its seat at Toulon Cathedral.
The cathedral was the seat of the Bishop of Fréjus, although from 1751 the bishops resided in Draguignan. In 1957 the see was united with that of Toulon to form the present Diocese of Fréjus-Toulon, with its seat at Toulon Cathedral.