- Ship Subsidy Lobby, Alleged, Select Committee to Investigate1
- Shipping Board Operations Select Committee8
- Shipping Board and Emergency Fleet Corporation Select Committee9
- Sims, Thetus W., Select Committee to Investigate Alleged Assault upon, by Charles C. Glover1
- Small Business Committee1
- Small Business, Permanent Select Committee on22
- Small Business, Select Committee on211
- Small Business, Select Committee on, House6
- Standards of Official Conduct Committee6
- Supplies and Shortages of Food, Particularly Meat, Select Committee To Investigate, House1
- Survivor Benefits, Select Committee on3
- Tariff Commission, Select Committee on Investigation of, Senate1
- Tax Exempt Foundations, Special Committee to Investigate6
- Tax-Exempt Foundations and Comparable Organizations, Select Committee to Investigate, House1
- Taylor and Other Systems of Shop Management, Special Committee to Investigate3
- Territories Committee265
- Territories Committee, House14
- Territories and Insular Possessions Committee8
- Un-American Activities Committee258
- Un-American Activities Committee, House27