The Darwen Weavers', Winders' and Warpers' Association was a trade union representing cotton industry workers in Darwen, Lancashire, in England. As the main industry in the town, the union has been influential in its history, and some of its leaders became significant national figures. Membership of the union grew steadily, reaching 5,500 in 1888, and 8,298 in 1907. Following World War I, the industry went into decline, with many job losses, and by 1960 the union was down to only 1,000 members. That year, it finally merged back into the Blackburn union.