Amul Roger Thapar (born April 29, 1969) is a United States federal judge.
Born in Detroit, Michigan, Thapar received a B.S. from Boston College in 1991 and a J.D. from Boalt Hall School of Law, University of California, Berkeley| in 1994. He was a law clerk to S. Arthur Spiegel of the United States District Court for the Southern District of Ohio from 1994 to 1996, and for Nathaniel R. Jones of the United States Court of Appeals for the Sixth Circuit from 1996 to 1997. He was an adjunct professor in the University of Cincinnati College of Law from 1995 to 1997 and from 2002 to 2006. He was in private practice in Washington, D.C., from 1997 to 1999. He was a trial advocacy instructor in the Georgetown University Law Center from 1999 to 2000. He was an assistant U.S. Attorney of the U.S. Attorney's Office, Washington, DC from 1999 to 2000. He was a General counsel, Equalfooting.com from 2000 to 2001. He was in private practice in Cincinnati, Ohio from 2001 to 2002. He returned to the U.S. Attorney's Office as an assistant in the Southern District of Ohio from 2002 to 2006, and was the U.S. Attorney for the Eastern District of Kentucky from 2006 to 2007.
On May 24, 2007, Thapar was nominated by President George W. Bush to a seat on the United States District Court for the Eastern District of Kentucky vacated by Joseph M. Hood. Thapar was confirmed by the United States Senate on December 13, 2007, and received his commission on January 4, 2008.