Pathankot District and Sessions Judge Tejwinder Singh announced the verdict in the open court.
Those convicted include former revenue official Sanji Ram, Special Police Officers Deepak Khajuria and Surinder Kumar, two investigating officers head constable Tilak Raj and sub-inspector Anand Dutta and Parvesh Kumar.
Ram's son Vishal is acquitted due to lack of evidence, while an accused juvenile faces a separate trial. His trial is yet to begin as a petition to determine his age is waiting judgement in the Jammu and Kashmir High Court.
Families of the convicted present at the court accused media for the verdict.
"We are going to challenge the judgment," said a defence counsel, after coming out of the court.
The quantum of punishment will be pronounced at 2 p.m.
The in-camera trial in the case ended on June 3, following which District and Sessions Judge Tejwinder Singh announced that the verdict would be delivered on June 10.
Elaborate security arrangements have been put in place because of the high-profile nature of the case.
According to the charge sheet, the girl, who belonged to a Muslim nomadic tribe, was kidnapped and held captive at a village temple in Kathua district on January 10 last year.
The 15-page charge sheet against the accused had said that the eight-year-old girl, who was kidnapped on January 10 last year, was raped in captivity in a small village temple in Kathua district after having been sedated for four days before she was bludgeoned to death.
She was drugged, starved and repeatedly raped for days. She was finally strangled and her head was bashed in with a rock. Her mutilated body was found in a forest area on January 17. Three days later, one of the accused reportedly a juvenile was arrested by police, the charge sheet said.
The Supreme Court had ordered that the case be shifted out of Jammu and Kashmir and be heard on a daily basis by the trial court in Pathankot.
The case had constrained relations between the then ruling coalition partners, PDP and the BJP after two ministers of BJP, Chowdhury Lal Singh and Chander Prakash Ganga, participated in a rally organised by the Hindu Ekta Manch in support of the accused arrested by the state crime branch.
The rape and killing of the girl had sparked outrage across the state, forcing the government to handover the case to the Crime Branch of Jammu and Kashmir Police.
( With inputs from IANS )