- Critter
- Crochet-work
- Cross-grained
- Cross-stitch
- Crossbar
- Crossbow
- Crossing
- Crotchet
- Croup
- Croupier
- Cry wolf
- Crystalline
- Crystallized
- Crystallography
- Ctrl
- Cubbyhole
- Cube
- Cubist
- Cubit
- Cumber
- Cunning
- Cunning person
- Cunningly
- Cunt
- Cup
- Cup final
- Cup-cake
- Cupboard
- Cupful
- Cupids arrow
- Cur
- Curacy
- Curd
- Curdled milk
- Curds
- Cure-all
- Curing house
- Curious
- Curl
- Curr
- Current
- Cut out
- Cut through
- Cutback
- Cuticle
- Cutlass
- Cuttlefish
- Cutto
- Cwm
- Cwtch
- Cyber space
- Cybernautics
- Cyclops
- Cyclotron
- Cylindrical stone
- Cymbal
- Cyperus grass
- Cyperus rotendra grass
- Cytode