It happened at around 11.30am on Wednesday 4 May 2016 on Leyland Road in Harrogate near the junction with Knaresborough Road.
The woman was taken to Harrogate District Hospital with serious injuries, where she remains.
Police are appealing to anyone who was in the area at the time and saw the collision happen or saw either the van or the woman prior to the incident.
Anyone with information is asked to contact North Yorkshire Police on 101, select option 2 and ask for Traffic Constable Steve James at Harrogate Roads Policing Group or email firstname.lastname@example.org
Please quote reference 12160077101 when calling.