Allan Guy Shepard (December 18, 1922 – May 27, 1989)[1][2] was an American attorney, politician, and jurist who served on the Idaho Supreme Court for two decades, including time as chief justice.

Born in Massachusetts, Shepard studied engineering at Boston University, then left to serve in the United States Army Air Forces during World War II as a B-24 waist gunner.

He completed his bachelor's and law degrees at the University of Washington in Seattle.

[7] Elected to the Idaho Supreme Court in August 1968,[8] Shepard served as a justice for over two decades, with three stints as chief justice,[9] including the final two years.

After a heart attack in late-1987,[12] Shepard had another in May 1989 and died of complications at age 66 at St. Alphonsus Regional Medical Center in Boise.