- Jackle
- Jackman
- Jacks
- Jackson
- Jacky
- Jacobs
- Jacobsen
- Jacobson
- Jacoby
- Jacques
- Jaeger
- Jaehrling
- Jaffe
- Jaggar
- Jagielski
- Jagla
- Jalenski
- James
- Jameson
- Jamison
- Janac
- Janes
- Janis
- Janousek
- Jansky
- Janson
- Janssen
- Janzy
- Jaquith
- Jarboe
- Jarmer
- Jarnberg
- Jarrett
- Jarvie
- Jarvis
- Jasa
- Jaskiel
- Jassmann
- Jeans
- Jee
- Jeffery
- Jeffords
- Jeffs
- Jehnke
- Jellesed
- Jemerson
- Jemison
- Jenkins
- Jenness
- Jennings
- Jensen
- Jepson
- Jerde
- Jersey
- Jeschke
- Jeske
- Jessen
- Jetton
- Jeub
- Jewell
- Jiggar
- Jim
- Jimenez
- Joann
- Job
- Jobe
- Joerger
- Joersz
- Johanesen
- Johannes
- Johansen
- Johanson
- John
- Johnsen
- Johnson
- Johnson-Hull
- Johnston
- Johnstone
- Jolley
- Jolliff
- Jolly
- Jonathan
- Jonely
- Jones
- Jong
- Joo
- Jordahl
- Jordan
- Jorge
- Jorgensen
- Jorgenson
- Jortner
- Jory
- Joseph
- Josephson
- Jossi
- Jost
- Joves
- Joy
- Jozaitis
- Juarez
- Jubb
- Judd
- Judkins
- Judy
- Jue
- Juhnke
- Julhes
- Julia
- Julian
- Jump
- Jung
- Jungkind
- Junio
- Junken
- Junor
- Jurinski
- Jurj
- Jurkowski
- Jwayad