Abstract: An anti-theft bracket adapted for attachment to the back mounting panel of a public telephone booth housing and to engage the bottom portion of a public telephone unit attached to the back mounting panel including a bottom member adapted to receive the bottom of the public telephone unit and an anti-theft bar mounted a predetermined distance from the bottom member for positioning between rows of booth mounting bolts connecting the public telephone unit to the back mounting panel, the anti-theft bar being positioned to alternately engage the rows of bolts in response to unauthorized relative movement between the public telephone unit and the booth back mounting panel.