Kim Kardashian was the butt of a lot of jokes at a roast that was supposed to be all about Tom Brady — with a not-so-welcome reception too … but, in fairness, she took it in stride.

The reality star was one of many of celebs on hand Sunday night for Netflix’s “The Greatest Roast of All Time: Tom Brady” — and when she was eventually introduced by Kevin Hart and co. to come up to the podium to say a few words … people didn’t seem happy to see her.

The clip’s going viral … a cascade of boos greeted Kim when she got onstage and started her monologue — which was taking aim at Kevin … but she couldn’t even get the words out.

Eventually, KK had to stop because the boos were so damn loud and drowning her out at the microphone — and she shot the crowd a look, basically telegraphing … “Really, y’all?” Somebody offstage (sounds like it might’ve been Jeff Ross) told everyone to settle down.

That wasn’t the end of it for Kim, BTW … she was put into the crosshairs yet again when Tony Hinchcliffe was handling MC duties — going down the line and roasting everyone.

Right after shouting Will Ferrell’s cameo as Ron Burgundy — he mentioned the classic ‘Anchorman’ line, “A whale’s vagina’ … and then immediately said, “Which reminds me, Kim Kardashian’s here.” He followed up by saying a lot of Black men “celebrate in her end zone.”

That wasn’t even the end of it … Tom himself eventually got a chance to take some shots at KK — and he didn’t hold back, joking she was nervous about being there … all because it meant her kids would have to be alone with their dad.

Kim was a good sport about it all — and her time onstage ultimately ended in applause … but yeah, it was a tough crowd and kinda-mean scene.

No harm, no foul … like we said, she rolled with the punches well enough — and even dished some digs of her own at TB12 … including some cracks about O.J. and Caitlyn Jenner.

All’s fair in love and roasts.