Real 'Wolf of Wall Street' Guy Found Dead

One of the real life guys who advised Jordan Belfort ... the 'Wolf of Wall Street' ... has been found dead in West Hollywood.

Barry Gesser was tight with Belfort and also consulted with the film's director Martin Scorsese and co-star Jonah Hill. TMZ has learned Gesser's body was found Wednesday afternoon.

Law enforcement sources tell us they don't suspect foul play in the 52-year-old's death at this time. It's also unclear if it was a suicide. Cops are still on the scene investigating.

Gesser pleaded guilty to fraud and got 3 years probation for the stock fraud and racketeering plots depicted in the Oscar nominated movie.

Gesser made headlines earlier this year when his new wife, actress Stacey Alysson, caught him in bed with a NY socialite. They'd only been married for 15 days.

4:20 PM PT -- Law enforcement sources tell us Gesser's housekeeper found him, and called 911. There were no obvious signs of trauma or suicide. We're told Gesser has a history of drug use, but there was no paraphernalia or pills found on the scene.