- Key, Wilhelmine E. (Wilhelmine Euteman), 1872- author1
- Keyes, Edward L. (Edward Loughborough), 1873-1949, author1
- Kik, M. C. (Marinus Cornelis), 1896-1975, author1
- Killian, John A. (John Allen), 1891- author1
- Kimber, Diana Clifford, author1
- Kimmel, Lu, 1905-1973, artist1
- King, Basil, 1859-1928 author1
- King, E. W., author1
- King, Henry Churchill, 1858-1934, author1
- King, W. V. (Willard Van Orsdel), 1888- author1
- Kinghorn, Hugh M. (Hugh McLennan), 1869-1957 author1
- Kingsbury, Forrest Alva, 1883-1972, author1
- Kiplinger, C. E., author1
- Kipper, L. J., artist1
- Kirchner, Raphaël, 1876-1917, artist2
- Kirkby, William, 1859- author1
- Kirkpatrick, Charles M., author6
- Kistler, J. B., author1
- Kittel, Walther, 1887- author1
- Kleiderer, Irvin C., author3