Rob Gronkowski -- Epic Dance Battle ... With Robert Kraft!!!!

Rob Gronkowski dancing his face off with a bottle of Patron -- amazing.

Patriots owner Robert Kraft getting on the stage and turning up with Rick Ross -- EPIC!!!

Both men got wild at the Super Bowl after-party at the Sheraton Wild Horse Pass Resort & Spa ... and TMZ Sports has the incredible footage.

Gronk was on stage with Flo Rida ... twerking, droppin' it low and jumping all over the stage ... with a bottle of Patron in his hand.

At one point, he passed the bottle to someone in the crowd who took a swig and passed it back!!!

But a short time later, Bob Kraft got on stage with Ross ... who called out the Pats owner to bust a move in front of the everyone ... and Kraft came STRONG!!!!!

Meanwhile, the only dancing Pete Carroll was doing that night was when he was trying to explain that terrible call at the end of the game.