The Catholic Church in Mexico comprises eighteen ecclesiastical provinces each headed by an archbishop. The provinces in turn comprise 18 archdioceses, 69 dioceses, and 5 territorial prelatures and each headed by a bishop (of some kind).

• The seat of the Archdiocese of Acapulco is Catedral de Nuestra Señora de la Soledad.
• The seat of the Archdiocese of Antequera is Catedral Metropolitana de Nuestra Señora de la Asunción.
• The seat of the Archdiocese of Chihuahua is Catedral Metropolitana de Chihuahua.
• The seat of the Archdiocese of Durango is Catedral Basílica de Nuestra Señora.
• The seat of the Archdiocese of Guadalajara is Catedral de la Asunción de María Santísima.
• The seat of the Archdiocese of Hermosillo is Catedral de la Ascunsión.
• The seat of the Archdiocese of León is Catedral Basílica de Nuestra Señora de la Luz.
• The seat of the Archdiocese of Mexico City is Catedral Metropolitana de la Asunción de María.
• The seat of the Archdiocese of Monterrey is Catedral Metropolitana de Nuestra Señora de Monterrey.
• The seat of the Archdiocese of Morelia is Catedral de San Salvador.
• The seat of the Archdiocese of Puebla de los Angeles is Catedral Metropolitana de Nuestra Señora de la Purísima Concepción.
• The seat of the Archdiocese of San Luis Potosí is Catedral Metropolitana de San Luis Rey.
• The seat of the Archdiocese of Tijuana is Catedral de Nuestra Señora de Guadalupe.
• The seat of the Archdiocese of Tlalnepantla is Catedral de Corpus Christi.
• The seat of the Archdiocese of Tulancingo is Catedral de San Juan Bautista.
• The seat of the Archdiocese of Tuxtla Gutiérrez is Catedral de San Marcos.
• The seat of the Archdiocese of Xalapa is Catedral Metropolitana de la Immaculada Concepción.
• The seat of the Archdiocese of Yucatán is Catedral Metropolitana de San Ildefonso.