The woman's name was contained in an official document published by the Tamil Nadu government.
It is illegal in India to report the name of a sexual assault victim.
Reports in local media suggest she could be just one of many victims of the alleged gang.
Police in the southern Indian town of Pollachi have been appealing for more victims to come forward since reports first emerged.
But the revelation of the student's name - in an official document handing the case to federal investigators - could deter women speaking out, warns Dr Swarna Rajagopalan, the founder of the Prajnya Trust, which focuses on gender violence.