- Caballero
- Cabe
- Cable
- Caddell
- Cadwallader
- Cage
- Cain
- Cajka
- Calderone
- Caldwell
- Cale
- Calegar
- Call
- Callahan
- Cambier
- Cameron
- Camp
- Campbell
- Canady
- Canfield
- Cannon
- Canoy
- Cantrell
- Caple
- Caputo
- Carden
- Cardoza
- Carin
- Carinder
- Carlino
- Carlisle
- Carlton
- Carpenter
- Carr
- Carraway
- Carrigan
- Carrington
- Carroll
- Carstensen
- Carswell
- Carter
- Cartmill
- Carty
- Caruso
- Caruth
- Carver
- Carwane
- Case
- Casey
- Cash
- Cason
- Cassell
- Castellucci
- Castle
- Castleberry
- Cates
- Catlin
- Cato
- Catotti
- Caudill
- Cawthorne
- Celenza
- Chace
- Chae
- Chalkley
- Chamberlain
- Chambers
- Champion
- Chap
- Chapman
- Chappell
- Charles
- Charlton
- Chase
- Chastain
- Chavis
- Cheek
- Cheifetz
- Chemla
- Chen
- Cheng
- Cherry
- Cheshire
- Chesnut
- Chesnutt
- Chesson
- Chestnutt
- Chiang
- Chilausky
- Childers
- Childs
- Chioffi
- Chiti
- Chittineni
- Chiu
- Choplin
- Chow
- Christensen
- Christian
- Christie
- Christman
- Christy
- Chuck
- Chung
- Churchill
- Ciaffone
- Ciccone
- Cimburke
- Ciompi
- Clack
- Claiborne
- Clair
- Clapp
- Claris
- Clark
- Clark-Jones
- Clarke
- Clary
- Clausing
- Clay
- Clayton
- Cleary
- Clegg
- Clements
- Clemmensen
- Clemons
- Cleve
- Clifford
- Cline
- Clodfelter
- Coates
- Coats
- Cobb
- Cobbs
- Cochran
- Cocker
- Cockrell
- Coffield
- Coffman
- Cohen
- Cole
- Coleman
- Coley
- Colley
- Collie
- Collins
- Colvard
- Colville
- Combs
- Comer
- Conard
- Cone
- Conklin
- Conkling
- Conley
- Connell
- Connelly
- Conner
- Connery
- Connor
- Conrad
- Constable
- Conte
- Cook
- Cooke
- Cooley
- Coon
- Cooper
- Copeland
- Coppedge
- Corbett
- Corbitt
- Corgnati
- Cornell
- Corr
- Corrado
- Cortese
- Costello
- Costner
- Coston
- Cotten
- Couch
- Coulter
- Council
- Counides
- Covington
- Cowell
- Cox
- Cozart
- Crabtree
- Craft
- Crain
- Cramer
- Craver
- Crawford
- Creech
- Creed
- Creel
- Creidler
- Cress
- Crew
- Crews
- Criscenzo
- Critcher
- Cromer
- Cromwell
- Cronce
- Croom
- Crose
- Cross
- Crossman
- Crotty
- Crowe
- Crowell
- Crumbliss
- Crump
- Crumpton
- Crutchfield
- Cruz
- Cua
- Cullen
- Cumberland
- Cumisky
- Cunningham
- Currie
- Curry
- Curtis
- Cutick
- Cuttino
- Cyphers
- Czysz