Clifton E. Mack, 80, a retired official of the General Services Administration, died of cardiac arrest Dec. 2 in a hospital in Dayton, Ohio.

He was commissioner of the GSA's federal supply service for 18 years before retiring from the government in 1958.

Mr. Mack was a native of Lynn, Mass., and graduate of Suffolk Law School in Boston.

He worked as a special agent for the old Bureau of Internal Revenue in Boston for 11 years before coming to Washington in 1940.

After leaving the government, he taught administrative science at Ohio State University until retiring as second time in 1969.

He served as an Army aviator in Europe during World War I.

His awards included the Presidential Citation and Medal for Merit, which he received in 1947.

Mr. Mack was president of the American Baptist Men from 1962 to 1963.

He was a Mason, a member of the American Legion, and of the Congressional Country Club. He was a member of the National Press Club and the Daedalians.

He is survived by his wife, Emma, of the home in Dayton; two sons, Leslie E., of Washington, and Clifton D., of Atlanta, Ga., a daughter, Linda M. Lane, of Russellville, Ark.; a sister, Doris Lyons, of North Reading, Mass.; seven grandchildren, and one great-grandchild.