Adrien Broner got a big fact rejection from an Ohio judge -- who denied the boxer's request for an early release from jail ... after showing up to court drunk earlier this month.
As we previously reported, Broner was sentenced to 30 days in jail after arriving to court 3 hours late and drunk on July 19th ... on a day where his bowling alley attack case was supposed to be thrown out.
But on Thursday, Broner asked the court to cut him a break and let him out early so he could train for an upcoming fight ... but the judge shut him down hard.
"If I let you go early because you're a sports star, what message does that send? You didn't show up. You were three hours late and drunk. I said 30 days, and 30 is the number," the judge said.
Meantime, Broner celebrated his 27th birthday yesterday ... so, happy birthday?