In the United States, the Presidential library system is a nationwide network of 13 libraries administered by the Office of Presidential Libraries, which is part of the National Archives and Records Administration (NARA). These are not libraries in the modern sense, but rather repositories for preserving and making available the papers, records, collections and other historical materials of every President of the United States since Herbert Hoover.

Although not officially sanctioned and maintained by NARA, libraries have been organized for several Presidents who preceded the official start of the Presidential Library Office.

Recent U.S. presidents have established presidential libraries in their home states in which documents, artifacts, gifts of state and museum exhibits are maintained that relate to the former president's life and career. Each library also provides an active series of public programs. When a president leaves office, the National Archives and Records Administration (NARA) establishes a presidential materials project to house and index the documents until a new presidential library is built and transferred to the federal government. The William J. Clinton Presidential Library became the eleventh presidential library on November 18, 2004, and the Richard Nixon Presidential Library and Museum became the twelfth on July 11, 2007.