Lucy Haeran Koh (born August 7, 1968) is an American lawyer serving as a United States circuit judge of the United States Court of Appeals for the Ninth Circuit. Koh previously served as a United States district judge of the United States District Court for the Northern District of California from 2010 to 2021. She also served as a California state court judge of the Santa Clara County Superior Court from 2008 to 2010. She is the first Korean American woman to serve on a federal appellate court in the United States.

- Gender
- Female
- Race
- Asian American
Prior employment
- Superior Court of California, County of Santa ClaraJudge · 2008–2010
- Private practice, Palo Alto, California2000–2008
Central District of CaliforniaAssistant U. S. attorney · 1997–2000
U.S. Department of Justice1994–1997- ↳special counsel, Office of Legislative Affairs · 1994–1996
- ↳special assistant to the deputy attorney general · 1996–1997
- U.S. Senate Committee on the JudiciaryFellow · 1993–1994
Appointments
2021–present · Appointed by Joseph R. Biden (Democratic)
2010–2021 · Appointed by Barack Obama (Democratic)Term ended: Appointment to Another Judicial Position
Education
J.D. · 1993- Harvard UniversityB.A. · 1990