The American Woolen Mill Housing District is a residential historic district at 300-328 Market Street in Lawrence, Massachusetts. It consists of nine three story multiunit tenements built in the first decade of the 20th century. They are situated in a roughly oval pattern around a central courtyard, a distinctive pattern designed to provide open space while maximizing housing density. The property was designed by local architect James Allen, and had features unusual for tenements, including gas heat and indoor plumbing.