The deadly collision occurred on Daur Road and involved a coach, a van and a car, the police added.
The injured were taken to Peoples Medical College. The dead included women and children.
Earlier in May, two people lost their lives when a speeding car overturned in Nawabshah. In March, three people were killed and three others critically injured when a passenger van collided with a speedy car on the Qazi Ahmed Road in the Nawabshah district.