C
- C & A Carbone, Inc. v. Clarkstown511 U.S. 383 (1994)
- Carson v. Makin142 S.Ct. 1987 (2022)
- Central Hudson Gas v. Public Service Comm'n447 U.S. 557 (1980)
- Champion v. Ames188 U.S. 321 (1903)
- Chaplinsky v. New Hampshire315 U.S. 568 (1942)
- Church Of The Lukumi Babalu Aye v. City Of Hialeah508 U.S. 520 (1993)
- Citizens United v. Federal Election Commission130 S.Ct. 876 (2010)
- City Of Boerne v. Flores521 U.S. 507 (1997)
- City Of Cleburne v. Cleburne Living Center, Inc.473 U.S. 432 (1985)
- City Of Philadelphia v. New Jersey437 U.S. 617 (1978)
- Clinton v. City Of New York524 U.S. 417 (1998)
- Clinton v. Jones520 U.S. 681 (1997)
- Cohen v. California403 U.S. 15 (1971)
- Cooper v. Aaron358 U.S. 1 (1958)
- Cox v. New Hampshire312 U.S. 569 (1941)
- Craig v. Boren429 U.S. 190 (1976)