Rachel Foster Avery (December 30, 1858 – October 26, 1919) was active in the American women's suffrage movement during the late 19th century, working closely with Susan B. Anthony and other movement leaders. She rose to be corresponding secretary of the National American Woman Suffrage Association and played a key role in organizing meetings across the country.
Avery participated in suffragist organizing at the state level as well, and ran the Pennsylvania Woman Suffrage Association in 1908.