Names
- Cochran, Thad1
- Cookie Monster (Fictitious character)1
- Cox, Edward E. (Edward Eugene), 1880-19521
- Cranston, Alan, 1914-20001
- Dart, Justin, 1930-20021
- Daschle, Thomas1
- DeLeon, Patrick1
- DeWitt, John L., 1880-19621
- Dean, R. S. (Ralph S.)1
- Del Rosario, Albert1
- Delaware Tribe of Indians1
- Denson, Eley P.1
- Denton, Jeremiah A., Jr. (Jeremiah Andrew), 1924-20141
- DiBacco, Thomas V.1
- Diamond, A. Leonard1
- Dirksen, Everett McKinley1
- Doi, Masato1
- Domenici, Pete1
- Dorgan, Byron L.1
- Drury, Joseph E.1
