Samuel Robert Bagenstos (born 1970) is an American attorney and academic who is the General Counsel of the United States Department of Health and Human Services. From January 2021 until June 2022, he served as the general counsel for the Office of Management and Budget. He is a former law professor at the University of Michigan, a job he returned to after serving for two years as the principal deputy assistant attorney general in the United States Department of Justice Civil Rights Division under Attorney General Eric Holder and Assistant Attorney General Tom Perez.