Barbara Haskins Stone, 55, an editor for the Brookings Institution and a Washington resident for 21 years died of cancer Thursday at her Washington home.

Mrs. Stone was known professionally as Barbara Haskins. In 1963, she joined Brookings, where she edited books, studies, reports and promotional materials.

Before that she was publications editor for the World Confederation of Organizations of the Teaching Profession. From 1967 to 1972 she was an editor for the National Education Association. She then returned to Brookings. In the 1960's, she established the award-winning student journal, Impact.

She also edited an international directory for the Econometric Society at Yale University before coming to Washington in 1958.

Mrs. Stone was born in Plymouth, England, and graduated from the London School of Economics. She studied languages and literature at Zaragoza University in Spain and international law at the Sorbonne in Paris.

Before coming to this country in 1957, she worked for the British Wildfowl Trust and in Paris for the Organization for European Economic Cooperation, now the Organization for Economic Cooperation and Development.

Mrs. Stone was a member of the Foreign Press Association, the Educational Press Association of America, the United Nations Cooperative, the Washington Film Council and the English-Speaking Union.

Survivors include her husband, Oliver E. Stone, of the home, and her mother, Meta Haskins, and a sister, Hilary Holliday, both of Vancouver, British Columbia.

The family suggests that expressions of sympathy be in the form of contributions to the Barbara Haskins Memorial Fund, Division of Onocology, at Georgetown University Medical School.