The Swiss National Library (German: Schweizerische Nationalbibliothek, French: Bibliothèque nationale suisse, Italian: Biblioteca nazionale svizzera, Romansh: Biblioteca naziunala svizra) is the national library of Switzerland. Part of the Federal Office of Culture , it is charged with collecting, cataloging and conserving information in all fields, disciplines, and media connected with Switzerland, as well as ensuring the widest possible accessibility and dissemination of such data.

The Swiss National Library is intended to be open to all and, by the breadth and scope of its collection, aims to reflect the plurality and diversity of Swiss culture. It is a heritage site of national significance.

On June 28, 1894 the Swiss parliament created the library with the responsibility of collecting "Helvetica": all publications relating to the Swiss and Switzerland. In 1899, the library opened to the public in the Federal Archives building.