- Jackman
- Jackowski
- Jackson
- Jacobs
- Jacobs-Vassell
- Jacobsen
- Jacobson
- Jacques
- James
- Jamison
- Janello
- Jani
- Janson
- Jariwala
- Jassem
- Jean
- Jeaneus
- Jeffrey
- Jeffries
- Jelstrom
- Jennings
- Jenssen
- Jimenez
- Jindracek
- Joanides
- Joannides
- Joannon
- Joannou
- Joffe
- Johanson
- John
- Johnson
- Jones
- Jordan
- Joseph
- Jovanovic
- Joya
- Juarbe
- Juers
- Julian
- Julien
- Jung
- Junkovic