- consecratio et diadematis impositio
- consensus gentium
- conservatio
- conservation of memory
- consideratio
- consignatio
- consilium
- consimilis
- consolatio
- consolidatio
- consortium
- consortium naturae divinae
- conspectus
- conspergens
- constantia
- consternatio
- constipatio
- constituens
- constitutionalis
- constraint
- constrictor
- constrictus
- constructio
- constructive thinking
- consul
- consul ordinarius
- consumptio
- contagio
- contagiositas
- contain
- contaminatus
- contemplatio
- contemptus mundi
- content
- content analysis
- content validity
- contentus
- contiguitas
- continens
- continuatio
- continuing news
- continuitas
- continuus
- contorsio
- contortus
- contra
- contra bonos mores
- contra legem
- contraceptio
- contraceptivus