- Jacksonians
- Jackson State Community College
- Jackson State University
- Jacksonville
- Jacksonville Beach
- Jacksonville College
- Jacksonville State University
- Jacksonville University
- jackstay
- jackstone
- jackstraw
- jackstraws
- jacks–in–the–box
- jacks–of–all–trades
- jack-tar
- jack–a–lantern
- jack–in–the–box
- jack–in–the–pulpit
- jack–of–all–trades
- jack–o'–lantern
- jack–o'–lanthorn
- jack–tar
- jack–with–a–lantern
- Jacob
- Jacobean