List of Largest 20 Libraries in the World
A library is a collection of materials, books, or media that are accessible for use and not just for display purposes. A library provides physical (hard copies) or digital access (soft copies) materials and maybe a physical location or a virtual space, or both. A library’s collection can include printed materials and other physical resources in many formats such as DVD, CD, and cassette as well as access to information, music, or other content held on bibliographic databases.
| Name & Country | Location | Catalogue size |
| British Library, United Kingdom | London and Boston Spa | 170–200 million |
| Library of Congress, United States | Washington D.C. | 170 million+ |
| Library and Archives, Canada | Ottawa | 54 million |
| Shanghai Library, China | Shanghai | 50 million |
| Russian State Library, Russia | Moscow | 47.2 million |
| Royal Danish Library, Denmark | Copenhagen and Aarhus | 42.5 million |
| National Diet Library, Japan | Tokyo and Kyoto | 41.9 million |
| Bibliothèque Nationale de France | Paris | 40 million |
| National Library of China | Beijing | 37.7 million |
| National Library of Russia | Saint Petersburg | 36.5 million |
| German National Library, Germany | Leipzig and Frankfurt | 36.1 million |
| Biblioteca Nacional de España, Spain | Madrid | 33.1 million |
| Library of the Russian Academy of Sciences, Russia | Saint Petersburg | 26.5 million |
| Berlin State Library, Germany | Berlin | 23.4 million |
| Boston Public Library, United States | Boston, Massachusetts | 22.4 million |
| New York State Library, United States | Albany, New York | 20 million |
| Harvard Library, United States | Cambridge, Massachusetts | 18.9 million |
| National Library of Sweden | Stockholm | 18 million |
| Vernadsky National Library of Ukraine | Kiev | 15.5 million |
| Yale Library, United States | New Haven, Connecticut | 15.2 million |
| National Library of Iran | Tehran | 15 million |
