Jack


 * Jack, a prisoner of the Khans in Fallout
 * Jack, a character from the NCR
 * Jack, a unique Ripper in Fallout 3
 * Split Jack, a character in the Fallout 3 add-on Broken Steel
 * Smiling Jack, a friendly raider merchant in Evergreen Mills
 * Jack Smith, a cannibal from Andale.