The Great Harwood Power Loom Weavers' Association was a trade union representing cotton weavers in the Great Harwood area of Lancashire, in England.
Initially, it met in secrecy, in a delph, and its members were locked out, but thanks a donation of £846 from the Blackburn Weavers' Friendly Society, it survived.
[1] By 1863 it was operating on a firmer footing, and affiliated in its own right, as the Great Harwood and Billington Power Loom Weavers' Association, covering not only Harwood, but also Billington, Rishton, Whalley and York.
[2] From the 1930s, the cotton industry in Lancashire began to decline, and the union lost members.
At some date after this, the Harwood union appears to have merged into the Blackburn and District Weavers', Winders' and Warpers' Association.