Thomas Lamson Ludington (born December 28, 1953) is a United States district judge of the United States District Court for the Eastern District of Michigan. Although the Eastern District of Michigan's other 14 judges cover the Southern Division, Ludington is the only judge for the entire Northern Division, which covers nearly a quarter of Michigan's land mass.

Career output and lasting influence
Opinions attributed per year · peak 2/year
Later decisions citing those opinions, per year · peak 20/year
Michigan Eastern District Court · 2006–
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
- Michigan Circuit Court, Forty-Second Judicial CircuitJudge · 1994–2006
- ↳chief judge · 1999–2006
- Private practice, Michigan1980–1994
Appointments
2006–present · Appointed by George W. Bush (Republican)
Education
- University of San Diego School of LawJ.D. · 1979
- Albion CollegeB.A. · 1976