Hulk Hogan Surveillance Video -- Middle-Aged Thieves Caught on Tape!

The women who walked off with an expensive piece of memorabilia from Hulk Hogan's shop in Florida were all caught on camera ... and TMZ has the surveillance video.

As we first reported, Hogan filed a police report Wednesday in Clearwater after he claimed four women conspired to steal a valuable piece of Hulkamania memorabilia ... a signed boot.

In the video, you can see the women make their way into the Hogan's Beach Shop ... and then congregate around the front desk clerk. Then something happens outside and the clerk, followed by four women, leaves the store to investigate.

But cameras pick up one of the women walking back into the store, walking straight to the back of the store, snatching the boot ... and calmly walking out. Cops described the woman as "a heavyset female in her 50s."

The investigation is ongoing.