Padiham (ˈpædiəm ) is a town and civil parish on the River Calder, about west of Burnley, Lancashire, England. It forms part of the Borough of Burnley. Originally by the River Calder, it is edged by the foothills of Pendle Hill to the north-west and north-east. The United Kingdom Census 2011 gave a parish population of 10,098, estimated in 2019 at 10,138.
Early forms of the name include "Padingham", with the last element probably from the Old English word hām, meaning home and ing in this sense meaning "of the". Its first is generally thought to be a personal name (Bede listed Padda as one of the priests who assisted Bishop Wilfrid in the late 7th Century).
No prehistoric or Roman sites have been found in the built-up area. Padiham, though a name of Anglo-Saxon origin, is not recorded in the 1086 Domesday Book. Padiham was never a separate manor, its lands largely being held by copyhold tenants of the Manor of Ightenhill, a part of the Honour of Clitheroe. In 1258 there was a single free tenant, one Gilbert de Padiham. The Lord of Clitheroe had established a water-powered corn mill here by 1311. It remained for centuries as a market town, where produce from Pendleside was bought and sold. The town expanded and was redeveloped during the Industrial Revolution. The centre is now a conservation area.
Padiham's population peaked around 1921 at about 14,000, declining to 10,000 in the early 1960s and 8,998 at the time of the 2001 census. This reflected how people were moving to the south of England in search of work, after the decline in the traditional cotton, coal and engineering manufacturing industries.
Queen Elizabeth II and Prince Philip first visited Burnley, Nelson and the old Mullard valve factory at Simonstone near Padiham on their post-Coronation tour of Lancashire in 1955.
Padiham, once a township in the parish of Whalley, became a civil parish in 1866. An urban district covered the town from 1894 until 1974, but over this time, some rural areas mainly to the north became a new civil parish, Northtown, as part of Burnley Rural District.