Asansol, city, northwestern West Bengal state, northeastern India. It lies just north of the Damodar River, about 30 miles (48 km) northwest of Durgapur.
Asansol is situated in the heart of the Raniganj coalfield, at the centre of the Kulti-Burnpur industrial complex. The city is connected by the Grand Trunk Road and by rail with Durgapur, Burdwan, and Kolkata (Calcutta). It is an important coal-trading and railway centre, with large railway workshops and a railway colony. Its major industries include textile, iron, and steel factories. Jaykaynagar, a suburb, has a large aluminum works. Asansol was constituted a municipality in 1896 and has several colleges affiliated with the University of Burdwan in Burdwan. Pop. (2001) city, 475,439; urban agglom., 1,067,369; (2011) city, 563,917; urban agglom., 1,243,414.