List of Roman Catholic dioceses (structured view)

The Roman Catholic Church in its entirety contains 2,988 ecclesiastical jurisdictions, including over 640 archdioceses and 2,206 dioceses, as well as apostolic vicariates, apostolic exarchates, apostolic administrations, apostolic prefectures, military ordinariates, personal ordinariates, personal prelatures, territorial prelatures, territorial abbacies and missions sui juris around the world.

In addition to these jurisdictions, there are 2,091 titular sees (bishoprics, archbishoprics and metropolitanates).

This is a structural list to show the relationships of each diocese to one another, grouped by ecclesiastical province, within each episcopal conference, within each continent or other geographical area.

The list needs regular updating and is incomplete, but as articles are written up, more will be added, and various aspects need to be regularly updated.

This refers to Catholic dioceses in the world, of all (Latin or Eastern) Churches, as of 2 February 2017^[update].

Additional types, exclusively for the Eastern Churches, Anglican and extraordinary form

...
Wikipedia