Which industries have made Ontario Canada’s leading manufacturing province?

Ontario is Canada’s leading manufacturing province, accounting for approximately half of the nation's manufacturing employment and production value. Its industrial prominence is supported by a diverse range of sectors that have evolved from 19th-century roots in milling, furniture, textiles, and farm implements.1

Key industries driving this leadership include:

• Automotive Industry: A sector of central importance, significantly bolstered by the 1965 Canada–United States Automotive Agreement.12
• Steel Industry: Centered in Hamilton and Sault Ste. Marie, this industry has been a cornerstone of provincial manufacturing since the late 19th century.1
• High Technology: Often referred to as "Silicon Valley North," this sector emerged in the late 20th century, particularly in the Kitchener-Waterloo area and the Ottawa suburb of Kanata.1
• Diversified Manufacturing: Other major contributors include processed foods, industrial machinery, electrical goods, chemicals, rubber and synthetics, aircraft, and furniture.1

This economic success is further enabled by Ontario's strategic location, access to U.S. markets, and a skilled labour force.3