Justice Cox
- Keith M. Callow, an Associate Justice of the Washington Supreme Court
- William G. Callow, an Associate Justice of the Wisconsin Supreme Court
- John S. Candler, an Associate Justice of the Supreme Court of Georgia
- Thomas S. Candler, an Associate Justice of the Supreme Court of Georgia
- David W. Carmody, an Associate Justice of the New Mexico Supreme Court
- John Carmody (North Dakota), an Associate Justice of the North Dakota Supreme Court
- Asa Chapman, an Associate Justice of the Connecticut Supreme Court
- Roy H. Chapman, an Associate Justice of the Florida Supreme Court
- James W. Cherry, an Associate Justice of the Utah Supreme Court
- Michael Cherry (judge), an Associate Justice of the Supreme Court of Nevada
- George M. Cochran, an Associate Justice Justice of the Supreme Court of Virginia
- Silas Morris Cochran, an Associate Justice of the Maryland Court of Appeals
- George F. Comstock, a Judge of the New York Court of Appeals
- Gideon Comstock, an Associate Justice of the Rhode Island Supreme Court
- Albert Conway, a justice of the New York Supreme Court, and a judge and chief judge of the New York Court of Appeals
- William Conway (Arkansas), an Associate Justice of the Arkansas Supreme Court
- J. William Copeland, an Associate Justice of the North Carolina Supreme Court
- Joseph T. Copeland, an Associate Justice of the Michigan Supreme Court
- John P. Cotter, an Associate Justice of the Connecticut Supreme Court
- Patricia O'Brien Cotter, an Associate Justice of the Montana Supreme Court
- James F. Couch Jr., an Associate Justice of the Maryland Court of Appeals
- Jessup Nash Couch, an Associate Justice of the Ohio Supreme Court
- Charles E. Cox, an Associate Justice and Chief Justice of the Indiana Supreme Court
- Frank Cox (West Virginia judge), an Associate Justice of the Supreme Court of Appeals of West Virginia
- Louis Cox, an Associate Justice of the Massachusetts Supreme Judicial Court