- jack mackerel
- jack-of-all-trades
- jack-o'-lantern
- jack pine
- jackplane
- jackpot
- jackpots
- jackrabbit
- jackrabbited
- jackrabbiting
- jackrabbits
- Jack Russell
- Jack Russell terrier
- jacks
- jackscrew
- jackshaft
- jack shit
- jacks-in-the-box
- jacksnipe
- jacksnipes
- jacks-of-all-trades
- Jackson
- Jackson Community College
- Jackson Hole
- Jacksonian