The Roman Catholic Diocese of Machiques (Latin: Dioecesis Machiquesensis) is a diocese located in the Roman Catholic Archdiocese of Maracaibo in Venezuela.

On 26 May 1943 Pope Pius XII erected the diocese as an Apostolic Vicariate. The Vicariate was elevated to a full diocese by Pope Benedict XVI on 9 April 2011.

• Ángel Turrado Moreno, OFMCap † (4 Sep 1944 – Jan 1954)
• Miguel Saturnino Aurrecoechea Palacios, OFMCap † (19 Dec 1955 – 10 Mar 1986)
• Agustín Romualdo Alvarez Rodríguez, OFMCap † (10 Mar 1986 – 7 Oct 1995)
• Ramiro Díaz Sánchez, OMI (24 Jan 1997 – 9 Apr 2011)
• Jesús Alfonso Guerrero Contreras, OFMCap (9 Apr 2011 – 21 Dec 2018), appointed Bishop of Barinas
• Nicolás Gregorio Nava Rojas (19 Oct 2019 -

• Roman Catholicism in Venezuela

• GCatholic.org
• Catholic Hierarchy^{[self-published source]}

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