Marianne Strengell (a.k.a. Marianne Hammarström, May 24, 1909 – May 8, 1998) was an influential Finnish-American Modernist textile designer in the twentieth century. Strengell was a professor at Cranbrook Academy of Art from 1937 to 1942, and she served as department head from 1942 to 1962. She was able to translate hand-woven patterns for mechanized production, and pioneered the use of synthetic fibers.