- Coinage, Weights and Measures Committee, House93
- Commerce Committee1,503
- Commerce Committee, Senate2,661
- Commission to Investigate and Study Agricultural Credits in Europe6
- Committees, Select Committee on, House3
- Commodity Transactions, Select Committee to Investigate, House1
- Communist Aggression, Select Committee on, House2
- Communist Propaganda in United States, Special Committee to Investigate, House20
- Conference Committees2,014
- Congress46,384
- Congress, Joint Committee on Organization of4
- Congress, Special Committee on Organization of, Senate1
- Congressional Elections, Select Committee to Investigate, House1
- Congressional Operations Joint Committee1
- Cook, George Washington, Select Committee to Consider Remarks of, Relative to President Roosevelt1
- Cost Office and Civil Service Committee, House1
- Crime, Organized, in Interstate Commerce, Special Committee to Investigate, Senate7
- Criminal Law, Select Committee to Investigate Administration of, by Federal Officials1
- Crop Insurance Select Committee1
- Davis, James H., Select Committee to Investigate Language of Speech of Mar. 22, 1916, of1