He may have turned his back on Tom Brady, but Antonio Brown is sticking by Kanye West's side ... channeling his buddy's controversial campaign and saying, "All Lives Matter."
Ye is facing a ton of criticism over the "White Lives Matter" shirt he wore during his YZY Fashion Show on Monday ... but despite the negative reception, he's dug his heels in even more throughout the week.
AB -- who recently trolled TB12 over his marriage issues with Gisele Bündchen -- isn't breaking ties with the artist ... reposting an old clip from August showing the two bouncing music ideas off each other, and including an interesting caption.
Antonio Brown Trolls Tom Brady, Posts Pic Hugging Gisele Amid Marriage Troubles
"All Lives Matter 🔔 🛎 #CallGod #Boomin," AB said on Instagram ... adding, "#Donda #Always"
AB and Ye have gotten pretty close recently -- they've worked on music together, and the Super Bowl winner even took the reins as president of Donda Sports in February.
Brown has also had his fair share of controversy recently -- video was released this week showing the ex-NFL star appearing to expose himself to a woman in Dubai.
Sounds like AB and Ye will have a lot to talk about the next time they link up.