Tommy Lasorda -- CLUBBING IN HOLLYWOOD ... With 2 Girls On His Arms!

He's 86-years-old ... but Tommy Lasorda's still down to PARTY!!!

TMZ Sports shot footage of the Los Angeles Dodgers legend leaving Boa Steakhouse last night with two women on his arm ... and walking over to the famous Bootsy Bellows nightclub on the Sunset Strip.

We're told Tommy hit the club for his niece's birthday party ... no word on how long he stayed inside the place.

Fun Fact: Lasorda is currently an executive with the Dodgers ... and has been with the team one season LONGER than legendary announcer Vin Scully.