Jack Zivic (1903–1973), American boxer who competed in the 1920 Summer Olympics
Jack Kerouac | Jack Nicholson | Jack Nicklaus | Jack the Ripper | Jack London | Jack Kemp | Jack Kirby | Jack Lemmon | Jack Black | Jack Abramoff | Jack Dempsey | Jack Benny | Jack White | Wolfman Jack | Union Jack | Jack White (musician) | Jack and the Beanstalk | Jack Johnson | Jack Charlton | Jack Palance | Jack Daniel's | Jack | Jack Paar | Jack Layton | Jack Straw | Jack Vance | Jack Bruce | Jack Warden | Jack's Mannequin | Jack in the Box |