Sandra Day O'Connor (March 26, 1930 – December 1, 2023) was an American attorney, politician, and jurist who served as an associate justice of the Supreme Court of the United States from 1981 to 2006. Nominated by President Ronald Reagan, O'Connor was the first woman to serve as a U.S. Supreme Court justice. A moderate conservative, she was considered a swing vote. Before O'Connor's tenure on the Court, she was an Arizona state judge and earlier an elected legislator in Arizona, serving as the first female majority leader of a state senate as the Republican leader in the Arizona Senate. Upon her nomination to the Court, O'Connor was confirmed unanimously by the United States Senate.

Sandra Day O'Connor
Supreme Court of the United States
Born 1930 in El Paso, TX
Died 2023 in Phoenix, AZ
FJC ID: 1796
Career output and lasting influence
Opinions attributed per year · peak 18/year
Later decisions citing those opinions, per year · peak 26,968/year
Court of Appeals of Arizona · 1979–1981Supreme Court of the United States · 1981–2023
Both charts share the same year axis. Opinion counts include only opinions in our corpus attributed to this judge so far — a year at zero can mean an attribution gap, not judicial silence. Influence typically outlasts the career: citations keep climbing after the last opinion.
- Gender
- Female
- Race
- White
Prior employment
- Arizona Court of AppealsJudge · 1979–1981
- Superior Court of Arizona, Maricopa CountyJudge · 1975–1979
- ArizonaState senator · 1969–1975
- ↳majority leader · 1973–1974
State of ArizonaAssistant attorney general · 1965–1969- Private practice, Phoenix, Arizona1957–1965
- Quartermaster Market Center, Frankfurt, GermanyCivil attorney · 1954–1957
- San Mateo County, CaliforniaDeputy county attorney · 1952–1953
Appointments
1981–2023 · Appointed by Ronald Reagan (Republican)Term ended: Death
Education
LL.B. · 1952- Stanford UniversityA.B. · 1950