Margaret Downey (born August 16, 1950) is a non-theist activist.
Downey is the founder and president of the Freethought Society (formerly Freethought Society of Greater Philadelphia).
She formerly served as the President of Atheist Alliance International.
She also founded the Anti-Discrimination Support Network, which reports and helps deal with discrimination against atheists. See also: Persecution of atheists
- Freethought Society official website