J.R. Smith -- No Charges In Alleged Pizza Shop Attack

Cleveland Cavs star J.R. Smith is officially off the hook in an alleged pizza joint attack -- with prosecutors saying he will NOT be charged with a crime for allegedly attacking a heckler.

J.R. was named in a police report filed by a 19-year-old man back in Nov. -- in which he claimed Smith choked him outside of a NYC pizza joint after he heckled the guy about being traded from the Knicks.

Smith had denied any wrongdoing from the very beginning -- and now it seems he's in the clear, with the District Attorney reportedly refusing to move forward with a case against the NBA star.

A spokesperson for the Manhattan District Attorney’s Office tells TMZ Sports, "After a thorough investigation of the circumstances surrounding this case, we have concluded that the evidence does not support criminal charges against Mr. Smith."