Jack

Jack may refer to:


 * Jack, the lead character of the webcomic of the same name, Jack
 * Jack Cavanaugh, an American furry artist and former Rowrbrazzle member from California, who lives in Newcastle, Texas, USA
 * Jack Eldar, also known as Zareth, a furry fan who lives in Dallas, Texas, USA
 * Jack Furlong, also known as HillBluffer, a retired artist
 * Jack Lynch Mysteries, a series of six anthro hardboiled detective science fiction stories by Clint Warlick totaling around 36,500 words, five of which were published in Yarf! between 1991 and 1997