List of Catholic dioceses (structured view)

As of October 5, 2021, the Catholic Church in its entirety comprises 3,171 ecclesiastical jurisdictions, including over 652 archdioceses and 2,248 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 2,100 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.