- Jabbora
- Jackline
- Jackson
- Jacob
- Jacobs
- Jacobson
- Jalbert
- James
- Jamison
- Jamme
- Janke
- Janousek
- Janssen
- Jantz
- Janvier
- Janzen
- Jarvis
- Jassman
- Jeanneret
- Jeannot
- Jeczala
- Jefferson
- Jeffries
- Jelinek
- Jenkinson
- Jennings
- Jens
- Jensen
- Jerue
- Jeske
- Jespersen
- Jessen
- Jewell
- Jewett
- Jilbert
- Jingling
- Jochim
- John
- Johnsen
- Johnson
- Johnston
- Jokinen
- Jolley
- Jones
- Joralemon
- Jordan
- Jose
- Josephson
- Judd
- Judy
- Juhasz
- Juhlin
- Juhnke
- Jukich
- Julian
- Jun
- Junkin
- Jurich
- Justice
- Justus