Shaquille O'Neal pulled out all the stops for his birthday on Sunday ... shutting down a Miami hotspot and throwing a HUGE party to celebrate his big 5-0.
Shaq took over Prime 112 in South Beach and partied late into the night ... and TMZ Sports has learned the bash was epic.
We're told the party featured a ton of food, Shaq-themed decorations, and plenty of star guests.
In fact, at one point during the festivities, a huge video tribute was played on a big screen ... showing a bunch of sweet messages from celebs, musicians and athletes to the Big Diesel.