- Navajo Tribe of Arizona, New Mexico & Utah1
- Osage Tribe, Oklahoma1
- Ottawa Tribe1
- Passman, Otto Ernest, 1900-19881
- Peterson, Arthur6
- Poff, Richard H. (Richard Harding), 1923-20114
- Reagan, Ronald7
- Rhodes, Fred Burnett, 1913-200114
- Ribicoff, Abraham, 1910-19981
- Rockefeller, John D., IV (John Davison), 1937-2
- Rogers, Harold, 1937-1
- Rostenkowski, Dan1
- Rudman, Warren B.1
- Saltonstall, Leverett, 1892-197933
- Saulnier, Raymond J. (Raymond Joseph), 1908-20091
- Scott, Hugh, 1900-19942
- Seminole Nation1
- Smathers, George A. (George Armistead), 1913-20071
- Smith, Margaret Chase, 1897-19953
- Smith, Neal Edward, 1920-1
