The bus with 47 people onboard was travelling from Chintpurni to Hoshiarpur in Punjab, when it lost control and fell into the gorge.
All the injured were immediately admitted to nearby hospitals for treatment. Out of 44, eight people were in serious condition, while the rest also had received major injuries.
According to the police, the passengers were reported to be pilgrims who were returning home after offering prayers at Chintpurni temple.
Further investigation into the matter is going on.