Osmund Alfred Leahy (31 August 1915 – 9 December 1989) was a retired United States Army major general.

He graduated from high school in 1934 and, unable to afford the tuition at Cornell University, enlisted in the United States Navy on 14 August 1934.

Leahy was promoted to lieutenant colonel on 16 December 1944, and then participated in the Allied counterattack during the Battle of the Bulge.

While conducting a test jump with a new type of parachute, it opened too rapidly, breaking both of his collarbones and catching on the airplane tail section.

[2][4][5] After attending the Army War College, Leahy served as commander of the 505th Airborne Infantry Regiment at Fort Bragg.

[3][4][5] In September 1964, Leahy was promoted to brigadier general and then served as chief of the Military Training Mission in Saudi Arabia until August 1966.

[3][4] From 1970 to 1972, Leahy was chief of staff and deputy commanding general of the 6th Army at the Presidio of San Francisco.

[4][6][7] In December 1941, Leahy married Elizabeth Pennell (8 October 1918 – 22 January 1970), the daughter of Major General Ralph McT.

Leahy subsequently developed an inoperable, malignant brain tumor and died at a nursing home in Bethesda in 1989.