- Carpetbagger
- Carriage
- Carriage and pair
- Carriage forward
- Carrot
- 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
- Casuistical
- Casus belli
- Cat and mouse game
- Cat call
- Cat fish
- Cat has nine lives
- Cataclysm
- Catafalque
- Catalysis
- Catamaran
- Catch
- Catch a tartar
- Cattamaran
- Cattle lifting
- Cattle plague
- Cattle rearing
- Cattle show
- Cattle-shed
- Cauda draconis
- Caudex
- Caulk
- Causationism
- Cause and effect
- Cause celebre
- Causeless
- Causerie
- Cayenne pepper
- Cd
- Cd drive
- Cdac
- Ceaseless effort
- Ceaseless flow
- Ceaselessly
- Celebrator
- Celerity
- Celery
- Celestial personage
- Cell membrane
- Cellar
- Centrifugal
- Centripetal force
- Centuple
- Century
- Cephalic
- Cerebral palsy
- Ceremony
- Certain
- Certainity
- Chalk out
- Challenging
- Chamber music
- Characteristic
- Chamberlain
- Chamois
- Chamomile
- Champerty
- Champing at the belt
- Chance
- Chancellor
- Chandelier
- Charming
- Charming woman
- Charms
- Charpoy
- Charred
- Chary
- Chaser
- Chasis
- Chassis
- Chastise
- Chastisement
- Chauffeur
- Chauvinism
- Che guvera
- Cheapen
- Cheapskate
- Cheating
- Check into
- Checked