Emery Thomas "E. T." Knudson (September 3, 1896 – June 13, 1974) was a justice of the Idaho Supreme Court from 1959 to 1965, serving as chief justice from 1963 to 1965.

from the University of Idaho College of Law in 1921 and was a member of Kappa Sigma fraternity.

[3] From northern Idaho, Knudson was born in Post Falls, graduated from Coeur d'Alene High School,[3] and served overseas during World War I.

In early 1965, he became the first elected official in Idaho to take a controversial loyalty oath enacted by the state legislature in 1963, and thereafter enjoined while awaiting litigation.

This biography of a state judge in Idaho is a stub.