- Cuscuta reflexa Roxb
- Cuss
- Custard pie
- Custodian
- Custodianship
- Customarily
- Customer relation
- Customize
- Cut down
- Cut from underground
- Cut glass
- Cyclist
- Cyclone
- Cylindrical
- Cymbals
- Cynophilist
- Cyperus
- Cyperus rotendus
- Cypher
- Cyprinid
- Cystic fibrosis
- Cystitis
- Cytology
- Czar
- Capex
- Crje
- Cosily
- Cbl
- Cozenger
- Cozy
- Cogency
- Cabal
- Cabalist
- Cabbage
- Cabernet
- Cabin
- Cabin cruiser
- Cable
- Caboodle
- Cache memory
- Cachet
- Cachinnation
- Cadaver
- Cadd
- Cadet
- Cadet corps
- Cadillac
- Cadre
- Cae
- Caesarean operation
- Caffeine
- Cafune
- Cagey
- Cain
- Calaboose
- Calamari
- Calcareous
- Calcification
- Calcium
- Calefaction
- Calendar
- Calendar month
- Caliber
- Callus
- Calm down
- Calm man
- Calmly
- Calmness
- Caloric
- Calotropis
- Camber
- Camels
- Cameo
- Camera-man
- Camisole
- Camouflage
- Camp chair
- Camp-shed
- Camper
- Campesinos
- Campment
- Canaille
- Canarese
- Cancer
- Cancroids
- Candidly
- Candidness
- Candor
- Candour
- Canine
- Canticle
- Canto
- Canton
- Canvasser
- Canyon
- Cap
- Cap in hand
- Caparison
- Capitalistic
- Caraway