- Cabibi
- Cabral
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- Cafasso
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- Cahill
- Cahn
- Cain
- Cairella
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- Calahan
- Calderon
- Calderwood
- Caldwell
- Caley
- Calhoun
- Calkins
- Callaghan
- Callahan
- Callender
- Callow
- Calvert
- Calvin
- Camacho
- Camargo
- Cambe
- Cambier
- Cameron
- Camie
- Camp
- Campbell
- Campoy
- Candish
- Cane
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- Canfield
- Canham
- Canino
- Cannon
- Canter
- Cantor
- Cantrell
- Cape
- Capehart
- Caplitz
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- Caraveo
- Carbajal
- Carberry
- Cardenas
- Cardoza
- Carey
- Cargal
- Carleno
- Carlin
- Carlis
- Carlson
- Carlsten
- Carlston
- Carlton
- Carmean
- Carnicello
- Caro
- Caron
- Carpender
- Carpenter
- Carr
- Carrejo
- Carroll
- Carrothers
- Carson
- Cartaya
- Carter
- Carter-Duff
- Cartmell
- Caruso
- Carver
- Casades
- Casalinuovo
- Casaus
- Case
- Casey
- Cash
- Cashin
- Casias
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- Caskey
- Casper
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- Cassidy
- Cast
- Castaneda
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- Castellari
- Castello
- Caster
- Castiglione
- Castillo
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- Castor
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- Catholic
- Catlett
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- Cefalu
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- Celentano
- Celeste
- Cella
- Celmer
- Centron
- Cerafici
- Cerami
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- Cerovski
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- Cervantes
- Chacon
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- Chalmers
- Cham
- Chamberlain
- Chamberlin
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- Chaparro
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- Charo
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- Chartrand
- Chase
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- Chavez
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- Chea
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- Chehouri
- Chen
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- Chernitzky
- Cherry
- Chesney
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- Chessin
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- Chetham
- Chew
- Chianese
- Chick
- Childers
- Childress
- Childs
- Chiles
- Chilton
- Chin
- Chism
- Chittivej
- Chitwood
- Cho
- Choi
- Chong
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- Christ
- Christensen
- Christian
- Christiansen
- Christianson
- Christie
- Christofferson
- Christy
- Chu
- Ciacci
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- Cic
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- Cies
- Cilli
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- Clair
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- Clancy
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- Clarke
- Clarkson
- Clausen
- Claussen
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- Clayton
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- Cleavenger
- Cleaver
- Clegg
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- Clem
- Clemenson
- Clement
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- Cobb
- Coburger
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- Cody
- Coe
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- Coffin
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- Cohara
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- Cole
- Coleman
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- Comer
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- Compton
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- Currie
- Curry
- Curtis
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- Cutler
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- Cybyske
- Cygan
- Cyr
- Cyran
- Czopek