Peel Regional Police said it happened in the area of Queen Street and Finchgate Boulevard.
Emergency crews responded to the scene at 9:44 a.m.
Police said there was one person in each vehicle.
The officer in the cruiser was not injured, but the man driving the other vehicle was taken to a local hospital with leg pain.
A police spokesperson said she didn’t have any information on the circumstances leading up to the crash.
The intersection was closed following the incident.