William Becque, 55, a former official of the D.C. Lung Association, died of a cardiovascular ailment Tuesday in Baltimore while visiting relatives.

Mr. Becque was head of the association's public service department during 1957 and then served as executive director until 1966.

He then moved to New York where he worked as executive secretary of the American Lung Association for nine years before he retired for reasons of health.

Mr. Becque was born in Edgewood Arsenal, Md. He earned a bachelor's degree at Johns Hopkins University and a master's degree in public health at the University of North Carolina.

Before moving here he worked for the Maryland Public Health Department and as an official of the Bucks County, Pa., Tuberculosis and Health Society and the New Haven, Conn., Lung Association.

In Washington, he served as president of the D.C. Public Health Association and director of the Washington Area Council on Alcoholism. He was a member of the Georgetown Kiwanis Club.

In 1966 Nr. Beque was awarded the Edward Kramer Funkhouser Memorial Award for distinguished service in public health by the board of directors of the D.C. Lung Association.

He is survived by his wife, Katharine S., of the home in Salisbury, Md.; a daughter, Janet B., of Bel Air, Md.; two sons, William S., of Ridgewood, N.J., and Bruce C., of Hope, Maine; two brothers, Motier, of Orange, Conn., and John H., of Lynchburg, Va., and his mother, Frances Becque, of Marion, Ky.

The family suggests that expressions of sympathy may be in the form of contributions to either the Maryland or D.C. Lung Associations.