Dr. G. Halsey Hunt, 77, former chief of the division of general medical sciences at the National Institutes of Health, died of cancer Saturday in San Diego, Calif., where he had lived since 1973.

He retired here in 1962 and became executive director of the Educational Council for Foreign Medical Graduates in Philadelphia, a position he held until 1973.

Dr. Hunt was commissioned an officer in the U.S. Public Health Service in 1936 after practicing medicine in Red Bank, N.J.

He came to Washington in 1945 to conduct a research study on medical group practice for USPHS. Two years later, he joined the Bureau of Medical Services as assistant chief of the division of hospitals. He became chief in 1949.

Dr. Hunt became the first director of the Center for Aging Research at NIH in 1956. He was named chief of the division of general medical sciences in 1958.

He was born in Newton, Mass. A graduate of Brown University, he received his doctor's degree from Columbia University College of Physicians and Surgeons in 1928.

Dr. Hunt was a fellow and former member of the board of governors of the American College of Surgeons and a diplomate of the American Board of Surgery.

His first wife, Mildred, died in 1976.

He is survived by his second wife, the former Helen McGuire, of San Diego; a daughter, Barbara Ketay of Idaho Falls, Idaho; one brother, two sisters and two grandchildren.