Shaquille O'Neal is stoked to hear about Allen Iverson's decision to quit drinking ... telling TMZ Sports he's "proud" of the NBA legend's new lifestyle.
We caught up with Shaq at the premiere of the new "Allen Iv3rson" Prime Video documentary in NYC on Monday ... and he raved about not only A.I. the player -- but the man off the court as well.
Shaq -- who was an executive producer alongside Stephen Curry -- explained why being involved in the project was so important to him ... saying Iverson deserved to have his story told from his point of view.