Thane, city in western India, in western Maharashtra state. Thane lies on the Thana River, in the north Konkan coastal lowland, on the mainland of the Deccan Plateau. Located about 30 km (about 20 mi) from the central business district of Mumbai (formerly known as Bombay), Thane has developed as one of Mumbai's suburbs. Industries in Thane manufacture a variety of products, including woolen fabrics, dyestuffs, drugs, pencils, glassware, cotton textiles, and handloomed fabrics. Major rail lines and a national highway link Thane with Mumbai and other cities and towns. The nearest airport is in Mumbai. Population (1991) 803,389.