who among the following was the first woman judge of supreme court
Sandra Day O'Connor.
Demographics of the Supreme Court of the United States
Ronald Reagan fulfilled his 1980 campaign promise to place a woman on the Court, which he did with the appointment of Sandra Day O'Connor. 
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Demographics of the Supreme Court of the United States [SEP] Gender
Of the 114 justices, 110 (96.5%) have been men. All Supreme Court justices were males until 1981, when Ronald Reagan fulfilled his 1980 campaign promise to place a woman on the Court, which he did with the appointment of Sandra Day O'Connor. O'Connor was later joined on the Court by Ruth Bader Ginsburg, appointed by Bill Clinton in 1993. After O'Connor retired in 2006, Ginsburg would be joined by Sonia Sotomayor and Elena Kagan, who were successfully appointed to the Court in 2009 and 2010, respectively, by Barack Obama. In September 2020, following Ginsburg's death, Donald Trump nominated Amy Coney Barrett to succeed her.