Mike Tyson Takes Selfies with Crowd on Venice Beach

Mike Tyson was a goner if he thought he could walk the super-crowded Venice Beach boardwalk undetected ... because even with a mask, Iron Mike was an easy mark.

Mike was checkin' out shops along the famous boardwalk Saturday, and it seems everyone recognized him and most wanted -- of course -- a selfie.

Mike obliged, as most normies struck a fighting pose with fists clenched. Tyson played along.

Unclear why Mike was there ... no film crews in sight. It's probably just as simple as this ... it was a beautiful day in SoCal and perfect for a little sand and surf.