Kenelm. December 13 and July 17. Son of Kenulph, King of Murcia (812–820).
Keyne (Keyna). Cornish saint (died 689).
Kilian. July 8. Irish saint (died 689).
Lawrence. August 10. Patron of Nuremberg, Genoa, and of the Escorial.
Leonhardt. November 6. Patron of prisoners and slaves; in Bavaria, of cattle (died ca. 560).
Lucy (Lucia). December 13. Patron of Syracuse, and against eye-diseases.
Ludmilla. September 16. Patron of Bohemia. Queen of that country (died ca. 920).
Luke. October 18. Patron of painters.
Macaire the Elder. January 15. (Fourth century.)
Macaire the Younger. January 2. (Fourth century.)