Sabin, Albert   Sabin, Florence Rena   Sakmann, Bert   Salk, Jonas Edward   Samuelsson, Bengt I.     Sanctorius, Sanctorius   Sanger, Margaret Higgins   Schally, Andrew V.   Schwann, Theodor   Schweitzer, Albert   Semmelweis, Ignaz Philipp   Servetus, Michael (Miguel Serveto)   Sharp, Phillip A.   Sharpey-Schafer, Edward Albert (born Schäfer)   Sherrington, Charles Scott   Simpson, (Cedric) Keith   Simpson, James Young   Sloane, Hans   Smith, Hamilton Othanel

Snell, George D.   Snyder, Solomon Halbert   Spallanzani, Lazzaro   Spemann, Hans   Sperry, Roger W.     Spock, Benjamin McLane   Stahl, Franklin William   Starling, Ernest Henry   Steele, Edward John   Steno, Nicolaus   Stephan, Peter   Steptoe, Patrick Christopher   Stokes, William   Stopes, Marie (Carmichael)   Sulston, John E.   Sutherland, Earl Wilbur Jr   Sydenham, Thomas   Szent-Györgyi Nagyrapolt, Albert von