- Rhode Island. State Board of Health, author.1
- Riley, Henry Alsop, 1887-1966, author1
- Ritchie, John W. (John Woodside), 1871-1943, author1
- Ritter, John, M.D., author1
- Rísquez, Jesús Rafael, author1
- Robinson, William J. (William Josephus), 1867-1936 author2
- Roffo, Angel Honorio, 1882-1947 author2
- Rogers, L. W. (Louis William), 1859-1953, author1
- Root, Francis M. (Francis Metcalf), 1889-1934, author1
- Rost, Franz, 1884-1935, author1
- Rubin, Herman H. (Herman Harold), 1891-1973, author1
- Rudolf, Robert Dawson, 1865-1941, author1
- Ryder, Charles T. (Charles Tripp), 1885- author1
- Sadler, William S. (William Samuel), 1875-1969 author1
- Sampson, C. M., 1882- author1
- Sanborn Laboratories author.1
- Sands, Irving J., 1891-1958, author1
- Sarnoff, Jacob, 1886-4
- Sauer, Louis W. (Louis Wendlin), 1885-1980, author1
- Schmeckebier, Laurence F. (Laurence Frederick), 1877-1959, author1