This brazen bandit made even the judge say, “Wow!”

A smooth-talking ex-con got slammed with $50,000 bail by a judge who apparently couldn’t believe the charges — that the suspect had conned his way into Police Headquarters Tuesday and stole laptops and BlackBerrys off a lieutenant’s desk, down the hall from the commissioner’s office.

“All I can say is, ‘Wow!’ ” Manhattan criminal court Judge Anthony Ferrara said. “Is this after 9/11?” Police Commissioner Ray Kelly brushed off alleged thief Jermaine Sweet. “This was his 18th arrest. It’s called in the trade an office creeper,” he said.

Sweet, 30, had gone to 1 Police Plaza under the guise of picking up stolen property from the clerk’s office, the criminal complaint said.

“My client denies being in any restricted area,” said Sweet’s lawyer, Andrea Moletteri.