Popkin is a surname. Notable people with this surname include:
Richard Popkin, academic philosopher
Samuel L. Popkin, political scientist
Zelda Popkin, fiction author
Barry Popkin, professor of nutrition at UNC-Chapel Hill
Cedric Popkin, suspected killer of the Red Baron
Gary Popkin, professor at New York City College of Technology
Anne Hunter Popkin, founding member of Bread and Roses