Sharon Block is an American attorney, government official, labor policy advisor and law professor who served during the Biden Administration as the Associate Administrator delegated the duties of the Administrator of the Office of Information and Regulatory Affairs from January 20, 2021 to February 1, 2022. During the Obama Administration, Block served on the National Labor Relations Board and in the United States Department of Labor and the White House. She currently serves as a Professor of Practice and the executive director of the Labor and Worklife Program at Harvard Law School.