Who was the first female Supreme Court Justice in the United States?

Sandra Day O'Connor is recognized as the first female Supreme Court Justice in the United States. Appointed by President Ronald Reagan, O'Connor took her seat on the Supreme Court on September 25, 1981. Her appointment marked a significant milestone in U.S. history, as it not only broke the gender barrier on the Supreme Court but also paved the way for future female justices.

O'Connor's tenure on the court was characterized by her pragmatic approach to the law and her willingness to bridge differences between ideological divides, making her a crucial figure in several landmark rulings. Her impact extended beyond her time on the court, as she became a role model for many women pursuing careers in law and public service.