Groom's Names are linked to the newspaper account of their marriage. These cover the approximate years of 1902-1955.
| Groom | Bride | Date of Marriage | Location | Photo |
| Kammlade, Ernest | Drenth, Jennie | 10 Dec 1930 | Sioux Co. | |
| Kaschmitter, Otto | Friedman, Elizabeth | 31 Aug 1914 | Sioux Co. | |
| Kelley, Charles Edward | Higgins, Mary Stella | 24 Jun 1931 | Rock Valley | |
| Kiernan, R. Max | Dykstra, Sylva | 29 Mar 1946 | Alton | |
| Kineen, Dr. W.J. | Miss Grubel | 30 Jun 1931 | Rock Valley | |
| Konz, John P. | Mousel, Theresia | 11 Jan 1916 | Alton | X |
| Konz, Julius | McCarthy, Doris | 31 Jan 1921 | Alton | |
| Konz, Math | Mousel, Anna | 10 Jan 1911 | Alton | X |
| Koob, Fred | Perlot, Irene | 31 Jan 1921 | Granville | |
| Kool, Andrew | VanderHoef, Drieka | 22 Feb 1926 | Maurice | |
| Korselman, Gt. | VandeSloot, Jeanette | 29 Jun 1931 | Sioux Co. | |
| Krusen, John | Dimmick, Lela | 27 Nov 1939 | Sioux City | |
| Krykes, Fred | Roetman, Margie | Feb 1920 | near Hospers |