North American Construction Group Ltd. (NACG) is a Canadian heavy civil construction and mining contractor founded in 1953 in Alberta. Originally named North American Road Builders, the company began with a single bulldozer and focused on road construction. Over the years, NACG expanded its services to include industrial construction and significant infrastructure projects, such as the Gardiner Dam and sections of the Alaska Highway. The company has a strong presence in the Fort McMurray oilsands region, working with major energy producers to support oil sands development.

NACG specializes in heavy construction and mining services, providing large-scale earthmoving and infrastructure solutions throughout project lifecycles. Its modern fleet includes haul trucks, excavators, and dozers. The company offers services such as road building, land clearing, pipeline installation, and industrial construction, primarily for the energy and resource sectors. NACG has expanded internationally and has grown through strategic acquisitions, enhancing its capabilities in remote site infrastructure and civil construction. The company emphasizes safety, efficiency, and environmental stewardship in its operations.