A Los Angeles-area home belonging to ex-NBA player Patrick Patterson was burglarized last week … and now, TMZ Sports has learned cops are on the hunt for the culprits.

Law enforcement sources tell us … the break-in happened just before midnight on June 7, when two men wearing masks, gloves and all-black outfits were captured on Patterson’s security system rummaging through his home.

We’re told the duo snagged two big bags of the former Raptors forward’s belongings … and booked it before LAPD officers arrived on the scene.

Unclear exactly what was stolen from the residence … but our sources say cops believe the guys got away with the stuff in a KIA.

Police did take a report … and have opened an investigation — although we’re told no arrests have been made in the case yet.

Patterson got his start in the NBA in 2010 … when the Houston Rockets selected him with the 14th overall pick in the draft. He went on to play a decade in the league … logging minutes with Sacramento, Toronto, OKC and the LA Clippers. In his career, he scored 4,782 points.