The Stephen A. Schwarzman Building is the flagship building in the New York Public Library system in the Midtown neighborhood of Manhattan in New York City. The branch, one of four research libraries in the library system, contains nine separate divisions. The structure contains four stories open to the public. The main entrance steps are at Fifth Avenue at its intersection with East 41st Street. As of 2015, the branch contains an estimated 2.5 million volumes in its stacks. The building was declared a National Historic Landmark, a National Register of Historic Places site, and a New York City designated landmark in the 1960s.

The New York Public Library (NYPL) is a public library system in New York City. With nearly 53 million items and 92 locations, the New York Public Library is the second-largest public library in the United States behind the Library of Congress and the fourth-largest public library in the world. It is a private, non-governmental, independently managed, nonprofit corporation operating with both private and public financing.