John Street is an east-west collector and arterial road in the City of Markham, Ontario, Canada.

East of Bayview, John Street currently serves to relieve traffic on Steeles Avenue, and Highway 7.

John Street also serves as a western extension (and bypass) of 14th Avenue via Alden Road and Esna Park Drive.

The combined route is designated York Regional Road 71, which also includes part of Centre Street in the City of Vaughan.

It was built by the Tory Loyalist in the 19th century, and its original occupants played a significant role in the Rebellions of 1837.

[2] In the 20th century, as Markham's population rapidly grew, John Street was extended to its current length, with modern housing along the road.

[4] York Region Transit operates Route #2 (Milliken) on John Street east of Henderson Avenue at the following frequencies:[5]