Jack

may refer to:
*Jackhat, a human who participated in The Shambler Campaign
*Jack Daniels, a Russian man who was involved in the events of The Russian Campaign
*Jack the Cabin Boy, a Fialta privateer during the Fialta-Shantine War
*Jack "Fatman" Boehmer, a general in Aeldrum's Parliamentary Guard during the First Coalition War
*Jack Ruby, an associate of Indigo the bounty hunter on Telrion during the Fistful of Crecibles Campaign