Elizabeth Barchas Prelogar is an American lawyer who has served as solicitor general of the United States since October 2021. She served as acting solicitor general from January 20, 2021, at the start of the Biden administration, until President Joe Biden sent her nomination to the U.S. Senate on August 11, 2021, when she was prevented from serving while the nomination was before the Senate as a result of the terms of the Federal Vacancies Reform Act of 1998.