David Sam (born August 12, 1933) is a United States District Judge.
Sam was born in Hobart, Indiana to Romanian immigrant parents whose family name was Sîrb. He received a B.S. from Brigham Young University in 1957, and a J.D. from the University of Utah College of Law in 1960. He later served as a United States Air Force Captain in the Judge Advocate General Corps from 1961 to 1963.
After leaving the military, Sam worked in private practice in Duchesne, Utah and Roosevelt, Utah from 1963 to 1973. He was a Duchesne County Attorney from 1966 to 1972, and served as a Duchesne County Commissioner from 1972 to 1974. He returned to private practice in Duchesne from 1973 to 1976 before being appointed as a District Judge in the Fourth Judicial District of Utah from 1976 to 1985. He also taught as an adjunct professor at Brigham Young University from 1977 to 1985.
On September 9, 1985, President Ronald Reagan nominated Mr. Sam to fill a U.S. District Court seat vacated by Aldon J. Anderson. He was confirmed by the United States Senate on October 16, 1985, and received his commission the same day. He served as chief judge from 1997–1999, and assumed senior status on November 1, 1999.