Mary Elizabeth Pidgeon (born Wadesville, Virginia, August 2, 1890; died Sandy Spring, Maryland, November 24, 1979) was an American woman suffrage activist and labor economist.

In preparation for women voting for the first time in November 1920, the Equal Suffrage League and the University of Virginia Extension Bureau cooperated on citizenship classes, and Pidgeon became the state director.

Initially an assistant editor, in 1930 she was made director of the Bureau's department of research, and in the 1940s she was chief of the Economic Studies Section.

She served as Recording Clerk at the Monthly and Quarterly Meeting levels, and contributed occasionally to Quaker publications, such as a review of Betty Friedan's The Feminine Mystique and other feminist works that appeared in the January 1, 1971 Friends Journal.

[4] In 1967 Pidgeon moved to Friends House, a newly-founded Quaker retirement community in Sandy Spring, Maryland, where she died of a heart attack on November 24, 1979.