The Apostolic Vicariate of Ucayali (Latin: Apostolicus Vicariatus Ucayali) was a Latin Church ecclesiastical jurisdiction or apostolic vicariate of the Catholic Church in northeast Peru.

The jurisdiction was established on February 5, 1900 as the Apostolic Prefecture of Ucayali, on territory split off from the Diocese of Ayacucho o Huamanga and Diocese of Huánuco. On July 14, 1925, it was promoted to as an apostolic vicariate and thus entitled to a titular bishop as its ordinary; the incumbent was elevated. The Apostolic Vicariate of Ucayali was suppressed on March 2, 1956 and its territory divided between three other new created apostolic vicariates: the Apostolic Vicariate of San Ramon, the Apostolic Vicariate of Requena and the Apostolic Vicariate of Pucallpa.

all incumbents were members of the Friars Minor (Franciscans, O.F.M.)

Apostolic Prefects of Ucayali

• Friar Augustin Alemany, O.F.M. (February 14, 1905 – September 1905)
• Friar Bernardo Irastorza, O.F.M. (September 1905 – 1912)
• Friar Francisco Miguel Irazola y Galarza, O.F.M. (January 28, 1913 – July 14, 1925 see below)

Apostolic Vicars of Ucayali

• Bishop Francisco Miguel Irazola y Galarza, O.F.M., Titular Bishop of Flavias (see above July 14, 1925 – 1939)
• Bishop León Bonaventura de Uriarte Bengoa, O.F.M., Titular Bishop of Madaurus (July 10, 1940 – March 2, 1956) (later Apostolic Vicar of San Ramon)

• GCatholic.org, with incumbent biography links
• Catholic Hierarchy

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