- Collins (continued)
- Collipriest
- Colllins
- Colt
- Coltman
- Colvin
- Combs
- Comeau
- Comee
- Comfort
- Comstock
- Conant
- Conard
- Concklin
- Conde
- Condon
- Conent
- Coney
- Conklin
- Connell
- Connelly
- Conner
- Connery
- Connors
- Conoryea
- Conover
- Conrad
- Conron
- Consla
- Constantino
- Conway
- Cook
- Cooke
- Cookman
- Cooksey
- Coolaw
- Coolbaugh
- Cooley
- Coolidge
- Coombs
- Coon
- Cooney
- Cooper
- Copeland
- Copp
- Coppock
- Corbett
- Corbitt
- Cordo
- Core
- Corey
- Corkle
- Corliss
- Cormaney
- Cormier
- Cornell
- Cornish
- Cornwall
- Coroles
- Corradino
- Corrente
- Corrigan