| famname | Location | URL | Name |
| Jefferson | USA | www.geocities.com/Heartland/Pointe/3548 | Rhio R. Gillis |
| Jenkins | wls/ pa | members.wbs.net/homepages/r/d/j/rdjk.html | R. Kujawski |
| Jennings | USA/SC>MS | www.geocities.com/Athens/Parthenon/1433/ | Rosa Whitehorn Smith |
| Jerabek | Czech or HUNGARY>USA | www.familytreemaker.com/users/g/a/r/Leona--Garcia-WA/ | Leona Kollman Garcia |
| Jerge | Germany>United States | members.localnet.com/~lbeilein | Linda Nebrich Beilein |
| Johnson | TN, VA, USA | | Brian Hulleberg |
| Jolley | USA (all 20,000 who came to America between 1631 & 1900) | | Mary L. Henke |
| Jolly | USA (all 20,000 who came to America between 1631 & 1900) | | Mary L. Henke |
| Jones | KS, IL, MD, USA | | Brian Hulleberg |
| Jones | USA ( WV & VA ) | www.geocities.com/Heartland/Meadows/8858/ | Roy Jones |
| Judson | Anytime, Anywhere | www.geocities.com/TheTropics/1127/roots.html | Linda Dolby |
| Judson | US, New England | www.geocities.com/TheTropics/1127/roots.html | Linda Dolby |
| Jung | Sprendlingen,Hessen,DE>RU | www.familytreemaker.com/users/g/a/r/Leona--Garcia-WA/ | Leona Kollman Garcia |
| Kabler | Bretzfeld, Wuerttemberg, Germany | | Cullen Cabler |
| Kalteich | Germany > USA | home.t-online.de/home/friedhelm.kalteich/ | Friedhelm Kalteich |