Lisa J. Peterson (born 1964) is an American diplomat and the former United States Ambassador to Eswatini. She was nominated by President Barack Obama on September 16, 2015, and confirmed by the Senate on Nov. 19, 2015. She left her post on January 20, 2021. Between January 20 and July 14, 2021, she served in the Biden administration as the Acting Under Secretary of State for Civilian Security, Democracy, and Human Rights in 2021.