- Carousel
- Carp
- Carpenter bee
- Carpenters son
- Carpetbagger
- Carriage
- Carriage and pair
- Carriage forward
- Carrot
- Carry on
- Carry weight
- Carry with one
- Cart
- Cart horse
- Cart-pole
- Cartel
- Carter
- Cartilage
- Cartography
- Carving
- Casanova
- Cascade
- Case history
- Case law
- Case sensitive
- Casement
- Cash
- Cash in hand
- Cash reserve ratio
- Cashew nut
- Cashier
- Cashierment
- Cask
- Cassation court
- Cassava
- Cassette
- Cast a lurid light on
- Cast a shadow
- Cast down
- Caste
- Caste-hindu woman
- Casting net
- Castles in the spain
- Casuistical
- Casus belli
- Cat and mouse game
- Cat call
- Cat fish
- Cat has nine lives
- Cataclysm
- Catafalque
- Catalysis
- Catamaran
- Catch
- Catch a tartar
- Catch one red-handed
- Catch sight of
- Catch-up
- Catchword
- Catechismal
- Categoize
- Categorical
- Cater-cousin
- Catholic church
- Catholicose
- Catridge drive
- Cats and dogs
- Cattail
- Cattamaran
- Cattle lifting
- Cattle plague
- Cattle rearing
- Cattle show
- Cattle-shed
- Cauda draconis
- Caudex
- Caulk
- Causationism
- Cause and effect
- Cause celebre
- Causeless
- Causerie
- Causing to move
- Caustic soda
- Caution deposit
- Cavalry soldier
- Cavern
- Caves
- Cayenne pepper
- Cd
- Cd drive
- Cdac
- Ceaseless effort
- Ceaseless flow
- Ceaselessly
- Celebrator
- Celerity
- Celery
- Celestial personage
- Cell membrane