or KEITHLEY, a market-town in the West Riding of Yorkshire, situated in a deep valley, near Black- stone Edge, on a little stream which runs into the Aire, 44 miles W. of York, and 204 from London by the Great Northern and Midland line. Although containing many fine stone houses, yet, as a town, it is not regularly built. The parish church, a large handsome building, occupies the site of one erected during the time of Henry I. The living, which is a rectory, is in the power of the Duke of Devonshire. There are also places of worship for the Independents, Methodists, Wesleyans, Baptists, Quakers, and Swedenborgians. Keighley has a neat court-house, a mechanics' institute, a marketplace, a library, a savings bank; and several national schools. The manufactures consist of coarse stuffs, merinos, and worsted yarns. The various mills employ upwards of 2000 people. The canal which joins this town with Hull and Liverpool affords a cheap means of transit for goods. Market-day, Wednesday. In 1645 Keighley was the scene of a battle between the royal and parliamentary forces. Pop. (1851) 13,050.