Nicholas Berthelot Lemann is an American writer and academic, and is the Joseph Pulitzer II and Edith Pulitzer Moore Professor of Journalism and Dean Emeritus of the Faculty of Journalism at the Columbia University Graduate School of Journalism. He has been a staff writer at The New Yorker since 1999. Lemann was elected to the American Philosophical Society in 2022.

The Columbia University Graduate School of Journalism is located in Pulitzer Hall on the university's Morningside Heights campus in New York City. Founded in 1912 by Joseph Pulitzer, Columbia Journalism School is one of the oldest journalism schools in the world and the only journalism school in the Ivy League. It offers four graduate degree programs.