HASLINGDEN, market town, municipal borough, Rossen dale parliamentary borough, Lancashire, England, 19 m. N.W. of Manchester by the L.M.S. railway. Pop. (1931) 16,637. The old town stood on the slope of a hill, on the borders of Rossendale forest, but the modern part has extended about its base. The parish church of St. James (rebuilt 1780), still retains a i 6th century tower. Woollen manufactures have given place to the manufacture of cotton goods. Engineering works, coal mining, quarrying and brick making are carried on in the neighbourhood. The borough was incorporated in 1891.