The Diocese of Mercedes (Latin: Dioecesis Mercedaniana) is a Latin Church ecclesiastical territory or diocese of the Catholic church in Uruguay.

The diocese was erected in 1960, from parts of both the Diocese of Salto and the Diocese of San José de Mayo.

The diocese is a suffragan of the Archdiocese of Montevideo.

[1][2] The current bishop is Carlos María Collazzi Irazábal, who was appointed in 1995.

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