Las Vegas strip clubs are getting a stern warning from cops — DON’T LET FLOYD MAYWEATHER INSIDE … because he sexually harasses strippers … something Floyd denies.

The Vice unit of the Las Vegas Metro Police Department contacted multiple strip clubs in Sin City … telling them Floyd and his crew have run roughshod in various clubs, manhandling the girls.

As one law enforcement source put it, “He [Floyd] goes in and pulls a ‘Do you know who I am’ and does inappropriate things with some of the women.”

We spoke with honchos from multiple strip clubs who tell us they will NOT heed the warnings, because they’ve never had a problem with Floyd. Plus, everyone knows he spends a TON of cash.

Sources close to Floyd tell us the boxer is adamant he has NEVER done anything wrong at a strip club — particularly with women — and has no idea why cops would have him in their crosshairs.

Hmmm, somebody is lying…