- Cable
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- Caddell
- Cade
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- Caesar
- Caffee
- Cafferky
- Cage
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- Caha
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- Cahall
- Cahill
- Cain
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- Caito
- Calahan
- Calardo
- Calder
- Caldwell
- Cales
- Calhoun
- Calia
- Calico
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- Calkins
- Callahan
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- Callard
- Callaway
- Callender
- Callery
- Callihan
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- Calo
- Calvert
- Camarda
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- Cambron
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- Caminiti
- Camp
- Campanello
- Campbell
- Canada
- Candelaresi
- Caneris
- Cann
- Cannavale
- Cannon
- Canny
- Canos
- Canter
- Canterbury
- Cantor
- Cantrell
- Cantwell
- Canty
- Capannari
- Capasso
- Capehart
- Caperelli
- Caplan
- Caples
- Caposela
- Cappel
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- Caproni
- Captain
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- Carberry
- Carbonell
- Carby
- Carden
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- Cardosi
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- Cardwell
- Carey
- Carfagna
- Carigan
- Carl
- Carle
- Carlisle
- Carlson
- Carlsson
- Carlton
- Carlyn
- Carmack
- Carman
- Carmody
- Carmon
- Carmosino
- Carnahan
- Carnes
- Carney
- Carolin
- Caroselli
- Carpenter
- Carpinello
- Carr
- Carraher
- Carraway
- Carrelli
- Carrico
- Carrigan
- Carroll
- Carrozzella
- Carruthers
- Carson
- Carstens
- Carter
- Carthen
- Cartier
- Cartisano
- Cartwright
- Caruso
- Carver
- Carville
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- Cary
- Casada
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- Casbar
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- Case
- Casey
- Cash
- Caskey
- Casper
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- Cassani
- Cassaro
- Casseday
- Cassidy
- Cassiere
- Cassinelli
- Castaldi
- Castaldo
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- Castelli
- Castellini
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- Caster
- Castillo
- Castle
- Castleberry
- Caston
- Cataline
- Catania
- Catanzaro
- Cate
- Cates
- Caton
- Catron
- Catt
- Cattran
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- Cautley
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- Cavallon
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- Cavanugh
- Cave
- Caver
- Cavin
- Cawley
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- Cecil
- Cefalu
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- Centrella
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- Cerimele
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- Chamberlin
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- Chen
- Chenault
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- Cherry
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- Cheung
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- Cho
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