Ben Gordon has been arrested again ... TMZ Sports has confirmed this time he was taken into custody on Tuesday after he allegedly threatened juice shop employees with a knife.
Cops in Stamford, Conn. tell us ... they got a call at around 9:15 AM that the former NBA star was inside of a downtown-area Juice Kings acting aggressively and bizarrely while wielding a blade.
Authorities say officers arrived on the scene quickly ... and were able to coax the 40-year-old out of the establishment without incident.