Mary Eleanora McCoy (née Delaney; January 26, 1846 – November 17, 1923)[1] was an American philanthropist, organizer, and clubwoman.

[1] She was born in an Underground Railroad station, with one source naming her parents as "Jacob C. and Eliza Ann (Montgomery) Delaney, perhaps escaped slaves".

In 1920, she attended the National American Woman Suffrage Association's Victory Convention in Chicago.

The charitable home she founded and ran, which provided shelter for children of working mothers who were abandoned by their fathers, also faced foreclosure.

[2] In 2012, she was inducted into the Michigan Women's Hall of Fame and in 2016 the Mary E. McCoy Post Office Building was dedicated in Detroit.