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.
This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "". Catholic Encyclopedia. New York: Robert Appleton.