An anti-theft pocket insert designed to prevent a pickpocket from stealing items stored within a traditional pocket. The anti-theft pocket insert includes a first fabric member having a front surface and a rear surface. A second fabric member is affixed to the front surface of the first fabric member such that a compartment having an interior volume designed to hold a passport or wallet is formed. An upper side of the second fabric member is not affixed to the first fabric member such that an opening in communication with the interior volume is formed. Further, the first fabric member is greater in length than the second fabric member such that a top edge of the first fabric member overhangs the opening. In this way, a user is able to store items inside the anti-theft pocket insert and place the insert within a pocket to prevent pickpockets from stealing the items.