Carl John Nichols (born 1970) is an American lawyer and jurist who has served as a United States district judge of the United States District Court for the District of Columbia since 2019. He has concurrently served as a judge of the United States Foreign Intelligence Surveillance Court since 2024.

- Gender
- Male
- Race
- White
Prior employment
- Private practice, Washington, D.C.1998–2005, 2010–2019
U.S. Department of Justice2005–2009- ↳deputy assistant attorney general, Civil Division · 2005–2008
- ↳principal deputy associate attorney general · 2008–2009
Law clerk , Hon. Clarence Thomas · 1997–1998
Law clerk , Hon. Laurence H. Silberman · 1996–1997
Appointments
2019–present · Appointed by Donald J. Trump (Republican)
Education
J.D. · 1996- Dartmouth CollegeA.B. · 1992