Roman Catholic Diocese of Osimo and Cingoli

The Diocese of Osimo e Cingoli was a Roman Catholic diocese in Italy.

It was founded in 1725 from a merger of the Diocese of Osimo and the Diocese of Cingoli. In 1986 it merged with the Diocese of Macerata-Tolentino, the Diocese of Recanati and the Diocese of San Severino to form the Diocese of Macerata-Tolentino-Recanati-Cingoli-Treia.

It was contained within the Papal States.