The 66th Grammy Awards aren’t off to the best start … ’cause the Recording Academy pulled a Warren Beatty — and Nicki Minaj fans are PISSED!!!

Here’s the deal … the Grammys don’t start until 5 PM PT, but before the ceremony, the Recording Academy uses its X account to hand out some of the trophies — basically to cut down time during the ceremony.

One of those awards … Best Rap Song, which was won by Nicki Minaj and Ice Spice for their song “Barbie World” — a huge moment for the rappers — except it didn’t last ’cause the Academy seemingly took it back.

You see … the Recording Academy deleted that congratulatory tweet and posted a different one — saying Killer Mike had actually won the trophy for his track “Scientists & Engineers” featuring André 3000, Future, and Eryn Allen Kane.

Multiple outlets are reporting KM as the real winner of the Gramophone… so it seems NM and IS are officially out of luck!

But if anyone’s taking it harder than Nicki … it’s the Barbz — who think the whole damn ceremony is rigged.