- Cabot
- Cabral
- Cafarchia
- Calderon
- Caldwell
- Callahan
- Callum
- Cameron
- Campbell
- Campos
- Candido
- Cannon
- Cardenas
- Carl
- Carnahan
- Carrillo
- Carter
- Castilla
- Castillo
- Cathcart
- Cavena
- Caveney
- Cease
- Ceballos
- Cervantes
- Chadwick
- Chan
- Chandler
- Chapman
- Charles
- Charpentier
- Chatman
- Chen
- Chim
- Ching
- Cho
- Cholakian
- Chow
- Christensen
- Chu
- Ciulla
- Clark
- Clarke
- Clason
- Clay
- Clearman
- Clelland
- Cloran
- Clougherty
- Codiga
- Cohn
- Coito
- Colletta
- Collier
- Collins
- Colony
- Colville
- Compton
- Congdon
- Connell
- Conrad
- Cooper
- Copeland
- Corda
- Cordner
- Cornell
- Corral
- Corrales
- Cosgrove
- Cosio
- Cota
- Coyer
- Cremer
- Cresta
- Croupe
- Crowe
- Crowley
- Cunha
- Cunningham
- Curran
- Cushman
- Cuttting