- Crooker
- Crooks
- Crosby
- Cross
- Crosse
- Crossett
- Crossland
- Crossman
- Crosswell
- Crouse
- Crow
- Crowder
- Crowell
- Crowley
- Crozier
- Crudo
- Crum
- Crumb
- Crump
- Crusen
- Crussett
- Cruttenden
- Cryder
- Cubitt
- Cudahy
- Cuddie
- Culbertson
- Cullen
- Culton
- Culver
- Culverwell
- Cumming
- Cummings
- Cummins
- Cunningham
- Cuolahan
- Curel
- Curran
- Curren
- Currie
- Currier
- Curry
- Curthose
- Curtis