- Cabanas
- Caccamo
- Cacela
- Callahan
- Callender
- Calloway
- Camby
- Cameron
- Campbell
- Cannada
- Cannon
- Caouette
- Cardwell
- Carey
- Carl
- Carling
- Carlson
- Carpenter
- Carrasco
- Carrier
- Carroll
- Cartagena
- Carter
- Caruk
- Carvalho
- Casey
- Caso
- Cassidy
- Castagno
- Cato
- Catricala
- Cavadas
- Celani
- Ceravollo
- Chalwell
- Chaput
- Chaves
- Cherry
- Chirkout
- Christiano
- Chuchro
- Cieckiewicz
- Cielo
- Ciganik
- Cimiano
- Cirigliano
- Citro
- Ciudad
- Clahar
- Clapis
- Clark-Cooney
- Clarke
- Claud
- Cleveland
- Clue
- Clunie
- Cobb
- Cockram
- Coco
- Coelho
- Coffey
- Cohen
- Cohn
- Colangelo
- Coleman
- Coles
- Collins
- Colon
- Colpitts
- Conde
- Condon
- Conneely
- Conran
- Contois
- Contreras
- Cooper
- Copper
- Cora
- Corber
- Corcoran
- Corona
- Correa
- Correia
- Corto
- Couceiro
- Courtland
- Cousineau
- Coutinho
- Couture
- Craddock
- Crampton
- Crandelmire
- Crosby
- Cross
- Crucitti
- Crump
- Cruz
- Cummins
- Currier
- Cwikla
- Cyr
- Czerniecki