Henry A. Kucin Sr., 62, a wholesale liquor salesman with Milton S. Kronheim & Co. in Washington for 15 years before he retired in 1979, died of pneumonia Tuesday at Walter Reed Army Medical Center. He had cancer.

Mr. Kucin, who lived in Silver Spring, was a native of Irvington, N.J. He earned his bachelor's degree in engineering at the University of Maryland.

He joined the Army during World War II and served in Europe. He left the Army in 1945 and remained in the Reserves. He returned to active duty during the Korean War. He retired from the Reserves in 1979 with the rank of major.

Mr. Kucin moved to Hyattsville in 1954 and worked as a salesman for Ballantine Beer Distributors in Washington and the Canada Dry Co. in Silver Spring. He joined Milton S. Kronheim in 1964.

He was a past president of the Georgetown Lions Club. He was a member of the Montgomery County chapter of the Retired Officers Association, the Randolph Lions Club in Silver Spring, the Knights of Columbus in Silver Spring and the American Legion. He was also a member of St. Bernadette's Catholic Church in Silver Spring.

Survivors include his wife, Ann, of Silver Spring; two sons, Henry A. Jr., of Germantown, and Daniel, of Silver Spring; three sisters, Estelle Hessburger of Dover, N.J., and Olga Kucinski and Agnes Pfister, both of Toms River, N.J.; a brother, Anthony Kucinski of Toms River, and two stepbrothers, Edward Risnowski of Linden, N.J., and Raymond Wiss of Averill Park, N.Y.