List of titular churches

[1][2] According to the Code of Canon Law, a cardinal may assist his titular church through counsel or patronage, although "he has no power of governance over it, and he should not for any reason interfere in matters concerning the administration of its good, or its discipline, or the service of the church".

[a][3] A cardinal may request that he be transferred to another titular church in a consistory; in addition, when a cardinal deacon opts to become a cardinal priest (usually after ten years), he may request either that his deaconry be elevated pro hac vice ('for this occasion') to a title or that he be transferred from his deaconry to a vacant title.

[3][8][c] As of 31 December 2024,[update] there are 255 extant titular churches, 184 of which are titles and 71 of which are deaconries, and 7 suburbicarian dioceses.

The tables below also indicate the 58 titular churches (45 titles and 13 deaconries) that are designated as basilicas.

Suburbicarian dioceses are not titular churches, but serve a similar function as honorary assignments that signifying the cardinals' relationship with the pope.