Mona Lesley Siegel is an American scholar, author, and historian whose primary focus is on international feminism, peace, and democracy in Europe and around the world.

[1] Siegel has written for and been interviewed by numerous news media on issues ranging from paid family leave to International Women's Day to the history of global feminism.

[10] In 2019, Siegel co-wrote, along with Dorothy Sue Cobble, an article for The Washington Post discussing the state of the contemporary debate on paid parental leave and discussing the history of paid parental leave policies.

[4] In January 2020, Siegel published a second book with Columbia University Press entitled Peace On Our Terms: The Global Battle for Women's Rights after the First World War, which examines women's global activism for democracy and peace after World War I.

[14] In 2016 and 2018, Siegel received grants from the National Endowment for the Humanities for "archival research leading toward completion of a book on feminist activism and peace negotiations at the end of World War I.