A serious collision has closed the A272 between Petersfield and the West Meon Hut just west of Langrish.
The crash was first reported just before 8am, close to the junction with Bordean Lane. It is unknown how many vehicles were involved.
The road remains closed, and the emergency services are currently in attendance.
Hampshire's air ambulance has also landed in nearby fields.
A spokesman for Hampshire Constabulary said: "We are dealing with a serious collision and will provide more information when we are in a position to do so."
This article will be updated when we have more information.