Jack Pritchard was a British furniture manufacturer and design patron who co-founded the Isokon design company in 1931. Under his leadership, Isokon developed mass-produced, standardized housing and furniture based on the principles of European modernism. Among the most important early advocates of modernism in Britain, Pritchard encouraged the use of materials such as concrete, steel and plywood as the basis of modern design. As a patron, he built Lawn Road Flats in Hampstead, the first example of modernist mass-housing in Britain, and commissioned leading European designers to produce furniture for Isokon.