Joondalup.
Jackson Hole
Jordan, Jamaica, Juno
Jealousy is an emotion. It begins with the letter J.
Jasmiine
jumanji
juice
That would be a juniper tree.
juvie
Johor Baru
Some 5-letter words beginning with 'j' are:jabotjauntjazzyjeansjellyjennyjettyjeweljiffyjimmyjointjoistjokerjollyjoulejoustjowlyjudgejuicejuicyjulepjumbojumpyjunkyjuror
jersey