Joseph Leo Koerner (born June 17, 1958) is an American art historian and filmmaker. He is the Victor S. Thomas Professor of the History of Art and Architecture and Professor of Germanic Languages and Literatures at Harvard University. Since 2008 he has also been Senior Fellow at the Harvard's Society of Fellows. Specializing in Northern Renaissance and 19th-century art, Koerner is best known for his work on German art and Early Netherlandish painting. After teaching at Harvard from 1989 to 1999 (as Professor since 1991), he moved to Frankfurt, where he was Professor of Modern Art History at the Goethe University, and to London, where he held professorships at University College London and the Courtauld Institute before returning to Harvard in 2007. His feature film The Burning Child, a documentary combining personal and cultural history, was released in 2019. Source: Wikipedia (en)