Colleen McMahon (born July 18, 1951) is a senior United States district judge of the United States District Court for the Southern District of New York.

Colleen McMahon
New York Southern District Court
Chief Judge — U.S. District Court for the Southern District of New York
Born 1951 in Columbus, OH
FJC ID: 2799
- Gender
- Female
- Race
- White
Prior employment
- Judicial Conference of the United StatesMember · 2016–2020
- New York State Court of Claims, and acting justice, Supreme Court of the State of New YorkJudge · 1995–1998
Private practice · 1976–1979, 1980–1995- Hon. Donald McHenry, U.S. ambassador to the United NationsSpeechwriter and special assistant · 1979–1980
Appointments
1998–2021 · Appointed by William J. Clinton (Democratic)
Education
J.D. · 1976- Ohio State UniversityB.A. · 1973