J.J.
Jack
Jackal
Jacob
Jada
Jade
Jaden
Jadzia
Jagger
Jaime
Jake
Jamie
Jamie Bleu
Janey
Jasmine
Jasmini
Jason
Jasper
Jawita
Jaws
Jazz
Jedi
Jeep
Jenilyn
Jenna
Jericho
Jess
Jesse, Jessie, Jessy
Jessica
Jessiper
Jester
Jesterine
Jet
Jewel
Jim
Jimmie, Jimmy
JJ
Job
Joe
Joe-Bob
Joey
John
JoJo, Jo-Jo
Joliette
Jonah
Jonny
Jordan
Jordy
Jorna
Joseph
Josh
Joshua
Josiah
Josie
Journey
Jovi
Joy
Juliette
Juneau
Junior
Juno
Justice
Justin
Jykeva
Jynxx
Counter