The Roman Catholic Diocese of Viedma (Dioecesis Viedmensis) is encompassed in the Ecclesiastical Province of Bahía Blanca.

As of 2006[update] the Bishop was Monsignor Esteban María Laxague, Salesian of Don Bosco appointed by Pope John Paul II on October 31, 2002.

His predecessor was HVRE Marcelo Angiolo Melani, Bishop from June 28, 1995 until 2002, when Laxague took over.

Located in the Rio Negro Province, Argentina, the diocese has its see in the City of Viedma, by the shores of Río Negro River and close to the coast of the Atlantic Ocean.

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