DaBaby Cut from Lollapalooza's Sunday Night Lineup

DaBaby just got the hook -- Lollapalooza organizers are yanking him out of their Sunday night lineup, which he was supposed to headline ... due to his ignorant and homophobic comments.

The legendary festival, going down in Chicago this weekend, announced Sunday morning ... "Lollapalooza was founded on diversity, inclusivity, respect, and love. With that in mind, DaBaby will no longer be performing at Grant Park tonight."

DaBaby was supposed to perform at 9 PM Sunday for more than 150,000 fans, as the final act of the 4-day festival -- instead, he'll be sidelined, and Young Thug has been moved up into that slot.

The 11th-hour change is in response to the rapper's onstage rant last weekend at the Rolling Loud festival in Miami. ICYMI ... DaBaby told the audience to put their phones up, "If you didn't show up today with HIV/AIDS or other STDs that'll make you die in 2-3 weeks" and "Fellas, if you didn't suck a n***a d**k in the parking lot."

He attempted to explain away the vile comments on social media when he posted a video claiming his words weren't directed at his gay fans because they're not "nasty gay n****s" or "junkies" and they take care of themselves.

In other words ... he just made it worse.

As we've reported ... the clothing company, Boohoo, stopped working with DaBaby soon after the heinous comments. Also, Dua Lipa -- who has a huge hit with DaBaby, "Levitating" -- denounced his remarks ... and their song has reportedly been removed from multiple Apple Music playlists.