It happened on the A697 near Longhorsley yesterday afternoon.
At around 1pm, police received a report of a collision between a motorbike and a Nissan X-Trail at the A697 junction with Fieldhead.
The motorcyclist was taken to hospital and is described as being in a critical condition.
Officers are appealing for anyone who witnessed the collision or who has any dashcam footage to contact them
Police seize large drugs haul in north Northumberland
New caravan site gets the green light on the Northumberland coast
Britishvolt 'fully committed' to gigaplant reassurance after online concerns
The top 10 coffee shops in north Northumberland according to TripAdvisor reviewers
Campsite owner seeks permission for 12 touring caravan plots at Northumberland beauty spot
Email any information or footage to [email protected] or call 101, quoting reference 561250519.