A sadistic sex fiend was found guilty of murder Monday night for sexually assaulting and murdering Queens jogger Karina Vetrano before dumping her body in a desolate stretch of parkland.

Chanel Lewis, 22, who confessed to the gruesome 2016 slaying in Howard Beach, was convicted on all four counts after the jury deliberated for just five hours.

Karina’s father, Philip Vetrano, said he felt “jubilation” after the verdict was read aloud in Queens Criminal Court.

“Justice — justice has been served,” the grieving dad said.

Lewis was found guilty of first-degree murder, two counts of second-degree murder and aggravated sexual abuse.

The courtroom was packed with Karina’s family members and other supporters, who cheered and shouted when the verdict was read by the jury foreman.

“Thank God!” several of them exclaimed.

Lewis will be sentenced on April 17. He walked out of the courtroom with a blank expression on his face while glancing at the few people who were there to support him.

Earlier in the day, the jurors heard closing arguments as Vetrano’s parents wept and prayed in the courtroom, hoping Lewis would be convicted after his first trial ended with a controversial hung jury in November after only one day of deliberations.

In his closing statement, Queens Assistant District Attorney Brad Leventhal pointed at Lewis and told jurors, “He’s the man who murdered Karina. This defendant is the perpetrator.”

Leventhal showed photos of Vetrano’s lifeless body and reminded jurors that Lewis had confessed on tape before his first trial.

“Justice is served,” he said after the verdict.

Lewis’ Legal Aid lawyer, Robert Moeller, accused investigators of “ignoring the facts” and said they “never once looked at another possibility” after singling out Lewis as a suspect.

“They came up with a logical explanation and never looked back,” he said.

The Legal Aid Society vowed to appeal the verdict.

“Our client did not receive a fair trial,” the group said in a written statement. “We will appeal immediately to a court that can afford Mr. Lewis the fair review he has thus far been denied.”

The case drew national headlines after Vetrano was killed while out jogging on Aug. 2, 2016, in a secluded area hidden by tall grass and weeds.

Her battered body was found face-down by her father, a retired firefighter.

Lewis, of East New York, Brooklyn, was arrested nearly six months after the slaying and confessed to killing Vetrano, 30, during a videotaped interrogation by NYPD detectives.

In the confession, Lewis claimed he got angry at Vetrano when she tried to fight him off.

He added that he repeatedly punched her and dragged her into the tall grass near the jogging path.

There, “I finished her off,” Lewis told cops, according to the tape.