Encyclopedias, Almanacs, Transcripts, and Maps
- Commingling
- Commissariat of the Holy Land
- Commissary Apostolic
- Commission of Regulars
- Commission of the Bishops' Conferences of the European Community (COMECE)
- Common Good
- Commonweal
- Communal Family
- Communal – After 1960
- Communal – Before 1960
- Communal–After 1960
- Communal–Before 1960
- Communication of Idioms
- Communication, Philosophy of
- Communio
- Communio: International Catholic Review
- Communion and Liberation
- Communion Antiphon
- Communion Service
- Communism and Buddhism