The Cathedral Basilica of the Immaculate Conception (Spanish: Catedral Basílica de la Inmaculada Concepción), also Mazatlán Cathedral, is the main religious building in the city of Mazatlán, in Baroque-Revival style of Sinaloa, Mexico, and home of the Roman Catholic Diocese of Mazatlán. It is located in the historical center.

Work on the temple began in 1856 by order of then Bishop Pedro Loza and Pardavé. Later, parish priest Miguel Lacarra took over the work and it was completed 1899. The temple-like basilica was consecrated 12 December 1941.

It consists of basilical plant, with three naves, which have the same height. It has an octagonal dome with lantern, crowned by an iron cross. The towers are of two bodies and present shots in the form of truncated prisms, which are crowned by a cross.

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  Facade of the cathedral
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  Domes
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  Atrium and statue of Jesus Christ
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  Interior of the cathedral
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  Holy Sacrament Chapel
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  Main altar
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  Interior of the cathedral on Christmas Eve
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  Holy Trinity fresco
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  Interior ceiling
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  Nativity scene during Christmastide
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  The cathedral in 1907
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  The cathedral in 1929
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  Dedication of the new basilica to the Immaculate Conception on November 8, 1938
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  Plazuela República and the cathedral

• Roman Catholicism in Mexico
• Immaculate Conception

• Media related to Catedral Basílica de la Inmaculada Concepción, Mazatlán at Wikimedia Commons