By TMZ

Former four division world champion Adrien Broner is now a wanted man as a warrant has been issued for his arrest.

A judge has issued a warrant for the boxer's arrest after he no-showed for a hearing in his Las Vegas battery case ... but AB says it's just a giant misunderstanding.

Back in September, Broner was caught shoving a woman and then punching a man in the face during a wild outburst on the Las Vegas strip.

Broner was cited for battery and ordered to appear in court Monday -- but he didn't show up ... so the judge issued a warrant.

We reached out to Broner who tells us he didn't know about the hearing -- and if he did, he would have appeared.

Court records show the summons that was supposed to be sent to Broner was returned to the court because it was "not deliverable as addressed" ... unclear who's to blame for that.

Broner says he's trying to clear things up with the court right now -- but until then, the warrant is still active.

TMZ had obtained the video of the incident, which starts with Broner taking pics with fans. Moments later he snaps, but it's unclear why, the former world champ appears enraged as he walks near the MGM.

A female companion tried to calm him down, but Broner wasn't having it and shoves her, sending her flying backward. Then he uncorks a ferocious knockout blow to a guy who went down for the count.

It's unclear if Broner knew the guy, or if he just got in his line of fire.

Broner has had numerous outside-the-ring issues over the years - including earlier this year when someone shot up his car (with Broner still in it) after an argument.

Broner, a four division world champion, was in the ring back in July, when he lost a twelve round unanimous decision to Mikey Garcia at the Barclays Center in Brooklyn, New York.