Jeff Beacher, the famous showman and theatre impresario, had his Hollywood Hills home ransacked in a shocking burglary, and the thieves made off with thousands of dollars’ worth of valuables … TMZ has learned.

Law enforcement sources tell TMZ … a cleaning lady called 911 Monday afternoon after she arrived at the home and noticed signs of a break-in. We’re told the suspects were already gone by the time officers arrived.

Jeff tells TMZ … the thieves took cash, jewelry, designer clothes, watches, comic books, baseball cards, and a coin collection. He says every closet was left wide open, and the home was completely trashed.

Luckily, Jeff says the suspects dropped a rare $10K Louis Vuitton jacket on the street as they fled from his property.

At the time of the break-in, Jeff was in Florida because he attended the Jake Paul vs. Anthony Joshua fight Friday night.

Our law enforcement sources tell us officers are still at the residence conducting a burglary investigation.

Jeff tells us, despite the robbery, he still plans to host his event on Dec 30 in St. Barths.

For those who don’t know … Jeff’s “Beacher’s Madhouse” was a staple at the Roosevelt Hotel in Hollywood for years … featuring wild performances full of little people, giants, and people dressed as Oompa Loompas.