Leslie Harburd Southwick (born 1950) is a United States circuit judge of the United States Court of Appeals for the Fifth Circuit and a former judge of the Mississippi Court of Appeals.

Career output and lasting influence
Opinions attributed per year · peak 28/year
Later decisions citing those opinions, per year · peak 330/year
Fifth Circuit Court of Appeals · 2007–
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
- Male
- Race
- White
Prior employment
Adjunct professor · 1985–1989, 1998–2020- Mississippi National Guard1997–2008
Visiting professor · 2007- Mississippi Court of AppealsJudge · 1995–2006
U.S. Army staff judge advocate2005
U.S. Army Reserve1993–1997- Candidate for Mississippi Supreme Court1996
Civil Division, U.S. Department of JusticeDeputy assistant attorney general · 1989–1993- Private practice, Jackson, Mississippi1977–1989
Law clerk , Hon. Charles Clark · 1976–1977- Hon. John F. Onion, Jr., Texas Court of Criminal AppealsBriefing attorney · 1975–1976
Appointments
2007–present · Appointed by George W. Bush (Republican)
Education
J.D. · 1975- Rice UniversityB.A. · 1972