Retired Air Force Col. Louis A. Guenther, 75, a pilot and personnel officer who served for 30 years before retiring in 1961, died Saturday at Walter Reed Army Hospital. He had arteriosclerotic vascular disease.

Col. Guenther was born in Leavenworth, Kan. and was a 1931 graduate of the U.S. Military Academy at West Point. He graduated from the Army's Advanced Flying School in 1932 and also was a graduate of the National War College.

He served on the War Department General Staff during World War II, as personnel chief of the 5th Air Force in Japan, and again at the Pentagon during the late 1940s. He was a member of the Secretary of the Air Force's Personnel Council from 1957 to 1959.

His decorations included the Bronze Star Medal and the Legion of Merit.

His wife, the former Leonora McSweeney Elkins, died in 1961.

Col. Guenther was a resident of Falls Church.

Survivors included three sons, F. Joseph, of Bluemont, Va., M. Anthony, of Xenia, Ohio, and C. Mark, of Falls Church; a daughter, Teresa Ann Steckler of Falls Church, and six grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Heart Fund, or to the American Cancer Society.