Harold Holzer is a scholar of Abraham Lincoln and the political culture of the American Civil War Era. He serves as director of Hunter College's Roosevelt House Public Policy Institute. Holzer previously spent twenty-three years as senior vice president for public affairs at The Metropolitan Museum of Art in New York before retiring in 2015.

The Roosevelt House Public Policy Institute at Hunter College is a think tank affiliated with Hunter College. It is located at 47-49 East 65th Street in the Lenox Hill neighborhood of Manhattan's Upper East Side in New York City. It is dedicated to analyzing public policy and fostering civic engagement by educating students in public policy and human rights, supporting faculty research, and supporting scholarly and public lectures, seminars, and conferences.