| famname | Location | URL | Name |
| Krueger | PRU > WI? > MN | | Deb Koplen |
| Krumwiede | Germany, Illinois, Minnesota, Nebraska | homepages.rootsweb.com/~loretta/index.htm | Loretta Krumwiede Barlow |
| Krutsinger | Germany>PA>VA, KY, IN, OH, IL, MO | www.familytreemaker.com/users/a/l/e/Melissa-T-Alexander/ | Melissa Thompson Alexander |
| Kuehl | Germany, Canada, US | www.rootsweb.com/~wiwood/MAK-roots/g-master.htm | Marcia Ann Kuehl |
| Kuhn | Worldwide Surname Research Newsletter | ladyecloud.hypermart.net/Kuhn.htm | Beverly Przybylski |
| Kvalsund | Norway>USA>WA | www.familytreemaker.com/users/g/a/r/Leona--Garcia-WA/ | Leona Kollman Garcia |
| Kyker | USA | | Brian Hulleberg |
| La Voye | Canada | www.geocities.com/Heartland/Prairie/2089/ | Andy Barnett |
| Lacer | USA | www.sisna.com/jaway/ | Judy Way |
| LaLoge | France | | Dolores LaLoge Beadle |
| Landon | USA,MD, SOMERSET COUNTY | www.epix.net/~wkennedy | Bill Kennedy |
| Lang | USA | www.angelfire.com/ny/LesleysWorld/index.html | Lesley Prey |
| Lang | Germany: Hannover | worldconnect.genealogy.rootsweb.com/cgi-bin/igm.cgi?db=fkwilson | Kay Wilson |
| Lapp | Lapland, Germany, Russia and USA | | Elaine McDowell |
| Lark | USA, Russell Co, VA | ourworld.compuserve.com/homepages/cindyhartman | Cindy Hartman |