William Crompton (10 September 1806 in Preston, England – 1 May 1891 in Windsor, Connecticut) was an American inventor in the field of loom technology.
Crompton was brought up as a hand loom cotton weaver and, at an early age, learned the trade of a machinist.
Another feature of it was an endless loop pattern chain, which, with its peculiar apparatus, operated the warp.
In 1840, he adapted his loom to the weaving of fancy woolens for Middlesex Mills in Lowell, Massachusetts, where he worked for two years.
Late in his career, he divided his time between manufacturing cotton and woolen goods in Millbury, Massachusetts, and touring New England teaching operators how to use his looms.