Rudolph F. Olson, 69, a retired federal government supervisory accountant and a consultant on corporate tax work, died Thursday at Suburban Hospital in Bethesda after a heart attack.

He retired in 1974 from the Department of Housing and Urban Development, where he had been director for the administrative accounting division. He had joined that agency in 1967 as director of the accounting operations division.

Mr. Olson was born in Chicago. He grew up in Park Ridge, Ill. He was a graduate of Harvard College and after earning a degree at the Chicago-Kent College of Law, practiced law and was an accountant in Illinois.

He also studied accounting at Northwestern University and later, after coming to Washington , earned a master's degree in accounting from Strayer College.

Mr. Olson served as an intelligence officer with the Army Air Corps during World War II.

He joined the federal government here in 1946 as a supervisory accountant and auditor with the General Accounting Office. From 1963 to 1967, he was assistant chief of the accounting division in the office of the U.S. maritime administrator, Department of Commerce.

Mr. Olson had received HUD's Special Achievement Award and two Outstanding Performance Awards from the Commerce Department.

He was a member of the American Institute of Certified Public Accountants, the Federal Government Accountants Association and the Illinois State Bar.

Mr. Olson was well known for his lapidary work and wood carvings.

He is survived by his wife, Loretta R., of Bethesda; three children, Criag D. and Laurette Terese Routen, both of Gaithersburg, and Gail Ann Herrmann, of Abidjan, Ivory Coast; two brothers, Oscar A., of Lebanon, Ohio, and Alfred K., of Denver, Colo., and three grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Heart Association of the National Wildlife Federation.