Lewis Herold Brown was an industrialist and former Chairman of Johns-Manville, once the world's largest manufacturer of asbestos and asbestos products.

Johns Manville is an American company based in Denver, Colorado, that manufactures insulation, roofing materials and engineered products. For much of the 20th century, the then-titled Johns-Manville Corporation was the global leader in the manufacture of asbestos-containing products, including asbestos pipe insulation, asbestos shingles, asbestos roofing materials and asbestos cement pipe.