Crystal Catherine Eastman (June 25, 1881 – July 8, 1928) was an American lawyer, antimilitarist, feminist, socialist, and journalist. She is best remembered as a leader in the fight for women's suffrage, as a co-founder and co-editor with her brother Max Eastman of the radical arts and politics magazine The Liberator, co-founder of the Women's International League for Peace and Freedom, and co-founder in 1920 of the American Civil Liberties Union. In 2000 she was inducted into the National Women's Hall of Fame in Seneca Falls, New York.
