- City of Boerne v. Flores
- Civil Law
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- Civil Rights Cases
- Clark v. Jeter
- Cleburne v. Cleburne Living Center
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- Clinton v. City of New York
- Clinton v. Jones
- Cohen v. California
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- Cohens v. Virginia
- Coker v. Georgia
- Colautti v. Franklin
- Colegrove v. Green
- Collin v. Smith
- Colorado v. Connelly
- Columbia Broadcasting System v. The Democratic National Committee
- Communist Party of Indiana v. Whitcomb
- Communist Party of the United States v. Subversive Activities Control Board
- Consumer Protection
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- Cooley v. Board of Wardens
- Coolidge v. New Hampshire
- Coppage v. Kansas
- County of Allegheny v. ACLU
- County of Riverside v. McLaughlin
- County of Sacramento v. Lewis
- Cox Broadcasting Corp. v. Cohn
- Cox v. Louisiana
