Robert S. Stone was an American physician. He served as the Director of The National Institutes of Health from May 29, 1973, to January 31, 1975. Stone also served as the vice president for health services and dean of the school of medicine at the University of New Mexico, dean of the School of Medicine of the University of Oregon Health Sciences Center and vice president of the Health Sciences Center, and dean of the Texas A&M Health Science Center College of Medicine.

The National Institutes of Health, commonly referred to as NIH, is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the late 1880s and is now part of the United States Department of Health and Human Services. Many NIH facilities are located in Bethesda, Maryland, and other nearby suburbs of the Washington metropolitan area, with other primary facilities in the Research Triangle Park in North Carolina and smaller satellite facilities located around the United States. The NIH conducts its own scientific research through the NIH Intramural Research Program (IRP) and provides major biomedical research funding to non-NIH research facilities through its Extramural Research Program.