Dr. Henry van Zile Hyde, 76, a former surgeon in the U.S. Public Health Service and an authority in the field of international health education, died Nov. 5 at the Bethesda Naval Medical Center following a heart attack.

Dr. Hyde, who began his career in the PHS in 1943, was a member of the U.S. delegation to the conference that founded the World Health Organization. He was the U.S. representative on the executive board of WHO from 1948 to 1961 and was its chairman in 1954 and 1955.

From 1961, when he left government, until 1972, he was director of the division of international medical education at the Association of American Medical Colleges. There he helped give American medical students a chance to study medical education in other parts of the world.

From 1972 until his death, he was executive director of the World Federation for Medical Education, which seeks to coordinate the activities of medical educational associations around the world.

Dr. Hyde, who lived in Bethesda, was born in Syracuse, N.Y. He earned a bachelor's degree at Yale University and a medical degree at Johns Hopkins University. From 1936 to 1941, he had a private practice in Syracuse.

He then became director of the bureau of pneumonia control at the New York Department of Health. In 1943, he moved to the Washington area and joined the Public Health Service. During World War II, he worked with the Office of Civil Defense and in Egypt. He subsequently held a number of assignments with the State Department and various international agencies. He was the assistant to the U.S. Surgeon General for international health from 1958 to 1961, when he joined the Association of American Medical Colleges.

Dr. Hyde's survivors include his wife, Ellen Tracy Hyde, of Bethesda; two sons, Dr. Thomas Hyde of Williamstown, Mass., and Henry van Zile Hyde Jr. of Phoenix; a daughter, Susan Scholl of Rochester, N.Y., and six grandchildren.