- Crossett
- Crossland
- Crossman
- Crosswell
- Crouse
- Crowder
- Crowell
- Crowley
- Crozier
- Crudo
- Crum
- Crumb
- Crump
- Crusen
- Crussett
- Cryder
- Cudahy
- Cuddie
- Culbertson
- Cullen
- Culver
- Culverwell
- Cummings
- Cummins
- Cunningham
- Cuolahan
- Curren
- Currie
- Currier
- Curry
- Curtis
- Curtiss
- Cushing
- Cushman
- Custer
- Cuthbertson
- Cutler
- Cutter
- Cutting
- Cuzick
- D'Ercole
- D'Ooge
- Dabney
- Daggett
- Dagsen
- Dague