Diane Whitmore Schanzenbach (born 1972 as Diane Miriam Whitmore) is an American economist who studies the effects of policies aimed at alleviating child poverty, such as the Supplemental Nutrition Assistance Program (SNAP). She works at Northwestern University as Professor of Human Development and Social Policy at their School of Education and Social Policy. She is also the director of Northwestern's Institute for Policy Research and the Brookings Institution's Hamilton Project, as well as a senior fellow at the Brookings Institution.