Encyclopedias, Almanacs, Transcripts, and Maps
- Klotz, Louis-Lucien
- Klug, Aaron
- Kluger, Solomon ben Judah Aaron
- Klugman, Jack
- Klumel, Meir
- Klupfel, Engelbert
- Klutznick, Philip Morris
- Knefler, Frederick
- Knieža, Emil
- Knight, William, Bl.
- Knights of Alcántara
- Knights of Columbus
- Knights of Dobrin
- Knights of Montesa
- Knights of Peter Claver
- Knights of St. George
- Knights of St. James
- Knights of St. John
- Knights of the Faith
- Knights of the Holy Sepulcher