Edmund Dwight (November 28, 1780 – April 5, 1849) was a prominent American industrialist, educational reformer, and entrepreneur.

Dwight was one of the Boston Associates who established the Hadley Falls Company which built Holyoke, Massachusetts, and providing early backing for the Cleveland, Columbus and Cincinnati Railroad.

This company, which was co-founded by Thomas H. Perkins, and George W. Lyman,[2] was incorporated for the construction and maintenance of a dam across the Connecticut River.

[3] The harnessed water power was used by investors manufacturing cotton, wood, iron, wool, and other materials.

[4] Dwight was also an early founder of the American Antiquarian Society, backing Isiah Thomas with several other prominent Boston businessmen.