Mary Steichen Calderone (July 1, 1904 – October 24, 1998) was an American physician and a public health advocate for sexual education. Her most notable feat was overturning the American Medical Association policy against the dissemination of birth control information to patients.
Calderone served as president and co-founder of the Sex Information and Education Council of the United States (SIECUS) from 1954 to 1982. She was also the medical director for Planned Parenthood. She wrote many publications advocating open dialogue and access to information at all ages. Her extensive work with popularizing sexuality education has often been compared to Margaret Sanger's campaign for birth control.