Rouge National Urban Park is a national urban park in Ontario, Canada. The park is centred around the Rouge River and its tributaries in the Greater Toronto Area. The southern portion of the park is situated around the mouth of the river in Toronto, and extends northwards into Markham, Pickering, Uxbridge, and Whitchurch-Stouffville.

The Rouge River is a river in Markham, Pickering, Richmond Hill and Toronto in the Greater Toronto Area of Ontario, Canada. The river flows from the Oak Ridges Moraine to Lake Ontario at the eastern border of Toronto, and is the location of Rouge Park, the only national park in Canada within a municipality. At its southern end, the Rouge River is the boundary between Toronto and southwestern Pickering in the Regional Municipality of Durham.