Thomas Lamson Ludington (born 1953) is a United States federal judge.
Born in Midland, Michigan, Ludington received a B.A. from Albion College in 1976 and a J.D. from the University of San Diego School of Law in 1979. He was in private practice in Michigan from 1980 to 1994. He was a judge on the 42nd Circuit Court of Michigan from 1994 to 2006, serving as Chief Judge of that court from 1999 to 2006.
On February 14, 2005, Ludington was nominated by President George W. Bush to a seat on the United States District Court for the Eastern District of Michigan vacated by Paul V. Gadola. Ludington was confirmed by the United States Senate on June 8, 2006, and received his commission on June 12, 2006.