Cocheco Mills, Historic industrial district in Dover, United States.

Cocheco Mills is an industrial complex in Dover built along a river with multiple brick and stone manufacturing buildings. The site contains former textile production facilities, support structures, and a stone dam that spans the waterway to provide power.

Cotton textile manufacturing on the Cochecho River began in 1815 with the Dover Cotton Factory upstream; in 1823 the Dover Manufacturing Company moved to Cochecho Falls. The Cocheco Manufacturing Company was incorporated in 1827 with $1,500,000 capital. In 1834 women workers struck alone for three days over a pay cut. Pacific Mill Works bought the plant in 1909 and closed it in 1937; the city bought it at auction in 1941.

The name comes from the Cochecho River, misspelled "Cocheco" by a clerk in the 1827 incorporation act; historian Alonzo Hall Quint called the spelling barbarous. In 1834 the mills saw one of the first textile strikes in which women participated virtually alone, lasting three days over a pay cut. The buildings now hold offices, restaurants, breweries and bars.

The complex sits at a bend of the Cochecho River between Main Street, Central Avenue and Washington Street in central Dover, so it can be walked through on foot from the surrounding blocks. Mill #3 spans the river, and the steel truss bridge with wooden decking crosses west of it. The buildings now hold offices, restaurants, breweries and bars rather than a single museum.

The dam is rough-cut granite ashlar with a modern concrete spillway, built between 1905 and 1925 to replace an earlier dam. Its height varies from 9 to 150 feet across the broad arc west of mills #2 and #3. The steel truss bridge west of mill #3, probably from the 1880s, keeps its wooden decking and a decorative balustrade.