10. New York Public Library
New York City, NY, USA
Founded in 1895, this library stocks over 11 million books.

9. Vernadsky National Scientific Library of Ukraine
Kiev, Ukraine

8. Harvard University Library
Cambridge, MA, USA
Founded in 1638, this library stocks over 13.1 million books.

7. Institute for Scientific Information on Social Sciences of the Russian Academy of Sciences
Moscow, Russia
Founded in 1969, this library stocks over 13.5 million books.

6. British Library
London, England
Founded in 1753, this library stocks over 16 million books.

5. Deutsche Biblothek
Frankfurt, Germany
Founded in 1990, this library stocks over 18.5 million books.

4. National Library of Canada
Ottawa, Canada
Founded in 1953, this library stocks over 18.8 million books.

3. Library of the Russian Academy of Sciences
St. Petersburg, Russia
Founded in 1714, this library stocks over 20 million books.

2. National Library of China
Beijing, China
Founded in 1909, this library stocks over 22 million books.

1. Library of Congress
Washington DC, USA