Jack (after the Georgetown University mascot, Jack the Bulldog)
Jack and Jill
Jack Burton
Jack Danger
Jack Daniel's
Jack Daniels Bourbon Pleasure
Jack Frost
Jack Frosted
Jack Roush (after a NASCAR car owner with the nickname "The Cat in the Hat")
Jack Sparrow
Jack The Scratcher (play on Jack The Ripper)
Jackie
Jackie O
Jackjack
Jack-o-Lantern
Jackpot
Jackson
Jackson Brown
Jacmel (a town in Haiti)
Jaco
Jacob
Jacquar
Jacqueline
Jacuzzi
Jada
Jada John Jaquin Orlando Lance Oprah Pacey Dawson Joey Brown
Jade
Jade Judzia Maria Contessa vosh Kura Jones-shaffer
Jady
Jadzia
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