Yael Lempert (born 1973/1974) is an American diplomat. She had served as Acting Assistant Secretary of State for Near Eastern Affairs between August 31, 2021 - May 31, 2022. She also served as Deputy Chief of Mission for the U.S. Embassy in London and U.S. Chargé d'Affaires to the United Kingdom. She is a career member of the Senior Foreign Service in the class of Minister-Counselor. Lempert graduated from Georgetown University.