The Fifth City Civil and Sessions Court Judge K B Sangannavar pronounced conviction of the six persons after their crime was proved.
The quantum of punishment will be pronounced on September 6.
The law student was raped by a eight-member gang inside the adjacent Jnanabharathi campus of Bangalore University in October last year.
The seventh accused Raja is still absconding. The eighth accused is a minor and the trial is going on at a Juvenile court in Bangalore.