Yonge Street is a major arterial route in the Canadian province of Ontario connecting the shores of Lake Ontario in Toronto to Lake Simcoe, a gateway to the Upper Great Lakes. Ontario's first colonial administrator, John Graves Simcoe, named the street for his friend Sir George Yonge, an expert on ancient Roman roads.

Sir George Yonge, 5th Baronet, KCB, PC, FRS, of Escot House in the parish of Talaton in Devon, England, was a British Secretary at War. He succeeded to his father's baronetcy in 1755, which became extinct when he died without children. He is remembered by, among other things, the name of Yonge Street, a principal road in what is now Toronto, Canada, so named in 1793 by the Lieutenant-Governor of Upper Canada, John Graves Simcoe.