New England definitely ain't gonna like these apples ...
Matt Damon -- one of the biggest die-hard Boston-area sports fans EVER -- just admitted he'd root against the Patriots in a Super Bowl!!
The Academy Award-winning actor made the shocking revelation on The Dan Patrick Show on Tuesday ... saying if it came down to Tom Brady's Buccaneers vs. the Pats in this year's Big Game, he's team TB12 all day!!
"Listen," Damon said.