Bill Burr's wife doesn't seem to be a fan of Donald Trump's -- that is, assuming this middle finger she fired off was for him ... and it very well may have been.
Nia Hill accompanied her comedian husband to the UFC 295 event Saturday night at NYC's Madison Square Garden -- and during one of DT's on-camera moments on the jumbotron ... she flipped the bird, which many have taken to be directly targeted for Trump.
Frankly, it's hard to tell if this F-U was, in fact, intended for The Donald or not.