- Catherine II
- Catherine of Aragon
- Catherine of Braganza
- Catherine of Siena
- catherine wheel
- catheter
- catheterize
- catheterized
- catheterizes
- catheterizing
- catheters
- cathexes
- cathexis
- cathode
- cathode ray
- cathode-ray tube
- cathodes
- cathode–ray tube
- catholic
- catholic
- Catholic Church
- Catholic Epistles
- Catholicism
- Catholicisms
- catholicities