Harry Leroy Jones, 90, a retired chief administrative law judge with the Justice Department's old Office of Alien Property and a special assistant to the attorney general, died of respiratory failure May 2 at his home in Washington.

Mr. Jones was born in Summitville, Ind., graduated from Indiana University and received a law degree from Northwestern University. During World War I, he was an Army pilot in Europe. He practiced law in Chicago after the war.

Mr. Jones moved to the Washington area in 1926. He had a private law practice and worked briefly for the Internal Revenue Service before joining the Justice Department in 1934.

He was an administrative law judge and a special assistant to the attorney general from 1948 until he retired in 1959.

For the next seven years, Mr. Jones was a director of the Commission of International Rules of Judicial Procedure. From 1966 to 1968, he was the executive director of the World Association of Judges.

During the 1970s, he was a writer and lecturer, and a consultant to the State Department.

He was a member of the Association of World War I Overseas Flyers, the Inter-American Society of International Law, the Washington Foreign Law Society and the American Foreign Law Association.

His wife, Gladys Moon Jones, died in 1981. Survivors include two children, Susan C. Gouge of Winchester, Va., and Tenley M. Jones of Arlington; seven grandchildren, and three great-grandchildren.