Valeria Solesin, a doctoral student at the University of Paris 1, has been living in Paris for the last six years, Corriere del Veneto reported.
On Friday she was held hostage inside the nightclub Bataclan, where she had gone to watch a concert with three other Italian friends.
Solesin was at the concert with her boyfriend, Andrea Ravagnanim and his sister Chiara, both Italians from Trento, as well as Chiara's boyfriend from Verona, all of whom managed to flee to safety.
Solesin became separated from her friends as they fled the indiscriminate shootings, and nothing has been seen or heard of her since.
One of her friends reported seeing her injured during the escape, but so far her name has not appeared among the lists of those dead or injured.
The other Italians managed to escape the club, but Ravagnani suffered minor injuries when a bullet whistled past his head, injuring his ear.
Friends have launched appeal to find Solesin and both the Italian Consulate in Paris and the Italian government are working to try and locate her.
Hospitals are also being searched.
“An Italian girl was in the concert hall at Bataclan with some friends. During the attackm as everybody started trying to escape, a friend saw that she had been injured,” Sergio Fioccom from the Italian Consulate in Paris told Radio 24.
“Since then there has been no news of her. She is without any Identification because her friend had her bag. We hope she was just injured and is not among the victims.”