- Cabiness
- Caddell
- Caffey
- Cagle
- Cain
- Caldwell
- Calender
- Calhoun
- Callahan
- Callen
- Calloway
- Camerio
- Cameron
- Camp
- Campbell
- Campton
- Canada
- Cannon
- Cantey
- Cantrell
- Canty
- Capel
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- Capilouto
- Capistran
- Caple
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- Caprara
- Carastro
- Caraway
- Card
- Cargill
- Carlisle
- Carlson
- Carlton
- Carman
- Carmichael
- Carnegia
- Carnes
- Carney
- Carol
- Carpenter
- Carples
- Carr
- Carroll
- Carson
- Carter
- Casey
- Caskey
- Casmus
- Casper
- Castanza
- Castleberry
- Cates
- Catledge
- Catrett
- Cau
- Causey
- Cavan
- Cawthen
- Cecil
- Chalker
- Chamberland
- Chambers
- Chambless
- Chamblis
- Chambliss
- Champagne
- Champion
- Champlin
- Chancellor
- Chandler
- Chapman
- Chappell
- Charles
- Chatham
- Cheatham
- Cheesboro
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- Cheney
- Cheng
- Cherry
- Chesnutt
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- Chevalier
- Childree
- Childrey
- Childs
- Christain
- Christen
- Christenberry
- Christian
- Christianson
- Christie
- Christopher
- Chromey
- Chu
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- Chun
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- Churchwell
- Cintron
- Cizek
- Clark
- Clayton
- Clein
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- Clem
- Clemens
- Clements
- Clemons
- Clenney
- Cleondis
- Cleveland
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- Cline
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- Clogston
- Closson
- Cloud
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- Clute
- Coaker
- Coan
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- Cobb
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- Cochran
- Cody
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- Coi Harris
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- Collier
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- Collinsworth
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- Crawley
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- Crusius
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- Culp
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- Cumbee
- Cummings
- Cunningham
- Curry
- Curtis
- Curvin
- Cusick
- Cutts