- Cone, Alfred I., author1
- Conference Board of Physicians in Industry. Anniversary Meeting 1924 : New York, N.Y.) author.1
- Conklin, Edwin Grant, 1863-1952, author1
- Conn, H. J. (Harold Joel), 1886-1975, author1
- Conn, H. W. (Herbert William), 1859-1917 author2
- Cooke, Joseph Brown, 1868-, author1
- Cooper, John M. (John Montgomery), 1881-1949, author1
- Cope, Henry Frederick, 1870-1923, author1
- Copeland, Royal S. (Royal Samuel), 1868-1938 author1
- Corners, George F., 1884-1962, author1
- Cort, William W. (William Walter), 1887-1971, author1
- Cotton, Frederic J. (Frederic Jay), 1869-1938 author1
- Coulter, Merle C. (Merle Crowe), 1894-1958, author1
- Council on Pharmacy and Chemistry (American Medical Association), author.1
- Cox, Harold, 1859-1936, author1
- Crandall, Arthur G. (Arthur George), 1858-19351
- Crane, A. G. (Arthur Griswold), 1877-1955, author1
- Crane, Calvin D. (Calvin Dennison), author1
- Craven, J. H. (John Henry), 1880-1940 author1
- Crile, George Washington, 1864-1943 author1