J
- Jack Sheldon
- Jack Sikma
- Jack Skille
- Jack Smethurst
- Jack Smith
- Jack Smith (footballer)
- Jack Sprague
- Jack Steinberger
- Jack Stewart (footballer)
- Jack Stokes
- Jack Straw
- Jack Swarbrick
- Jack Taschner
- Jack Tatum
- Jack Taylor
- Jack Teagarden
- Jack Teitel
- Jack Telnack
- Jack Thompson (football)
- Jack Trudeau
- Jack Valenti
- Jack Vettriano
- Jack Wagner
- Jack Wall
- Jack Warden
- Jack Webb
- Jack Welch
- Jack White
- Jack Whittaker
- Jack Williams (football)
- Jack Willis
- Jack Wilshere
- Jack Wilson
- Jack Young
- Jack Youngblood
- Jacki Schechner
- Jacki Weaver
- Jackie Aprile, Jr.
- Jackie Ballard
- Jackie Bates
- Jackie Battle
- Jackie Biskupski
- Jackie Brenston
- Jackie Brown
- Jackie Butler
- Jackie Chan
- Jackie Collins
- Jackie Cooper
- Jackie Dingfelder
- Jackie Earle Haley
- Jackie Gallagher-Smith
- Jackie Garcia
- Jackie Greene
- Jackie Healy-Rae (politician)
- Jackie Hoffman
- Jackie Jackson
- Jackie Jensen
- Jackie Johnson
- Jackie Joyner-Kersee
- Jackie Kelly
- Jackie Lee
- Jackie Mason
- Jackie McLean
- Jackie McNamara
- Jackie Meretsky
- Jackie Milburn
- Jackie Moore
- Jackie Piper
- Jackie Robinson
- Jackie Selebi
- Jackie Sherrill
- Jackie Shipp
- Jackie Shroff
- Jackie Slater
- Jackie Smith
- Jackie Speier
- Jackie Stewart
- Jackie Stiles
- Jackie Walorski
- Jackie Wilson
- Jackson Browne
- Jackson Brundage
- Jackson C. Frank
- Jackson Carlaw
- Jackson Haas
- Jackson Mendy
- Jackson Pollock
- Jackson Rathbone
- Jackson T. Stephens
- Jackson Vroman