| Cathedral Basilica of the Immaculate Conception | |
| Other Name: | Catedral Basílica de la Inmaculada Concepción |
| Location: | Mazatlán |
| Country: |  Mexico |
| Denomination: | Roman Catholic Church |
| Dedication: | Immaculate Conception |
| Consecrated Date: | 12 December 1941 |
| Past Bishop: | Rafael Barraza Sánchez |
| Style: | Baroque-Revival |
| Years Built: | 1856-1899 |
| Groundbreaking: | 1856 |
| Completed Date: | 1899 |
| Diocese: | Roman Catholic Diocese of Mazatlán |
| Bishop: | Mario Espinosa Contreras |
The Cathedral Basilica of the Immaculate Conception[1] (Spanish; Castilian: Catedral Basílica de la Inmaculada Concepción) Also Mazatlán Cathedral Is the main religious building in the city of Mazatlán,[2] in Baroque-Revival style of Sinaloa, Mexico,[3] 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.