Rowan Williams Davies & Irwin Inc. provides engineering consulting services for designers for the development of buildings and structures in Canada. It offers ideas, concepts, solutions, and analysis to support and optimize building designs.

The company serves various market sectors, such as commercial and residential, hospitality and entertainment, transportation, science and technology, education, healthcare, and urban planning, as well as sports facilities, bridges, airports, and structures. Rowan Williams Davies & Irwin Inc. was founded in 1972 and is based in Guelph, Canada.