John Hancock Hay Jr. (October 2, 1917 – December 18, 1995) was a lieutenant general in the United States Army who served as commander of the Berlin Brigade, the 1st Infantry Division during the Vietnam War and XVIII Airborne Corps.

[1] Hay served with the 10th Mountain Division in Italy during World War II.

He reached the rank of major, and was awarded the Silver Star and Legion of Merit Hay served as commander of the 1st Airborne Battle Group, 327th Infantry Regiment from September 1959 to July 1960 and later as chief of staff of the 101st Airborne Division until 1961.

Hay was assigned to South Vietnam in January 1967 as commanding general of the 1st Infantry Division and remained in this role until February 1968.

This article incorporates public domain material from websites or documents of the United States Army Center of Military History.