The National Library of Estonia (Estonian: Eesti Rahvusraamatukogu) is a national public institution in Estonia, which operates pursuant to the National Library of Estonia Act (Estonian: Eesti Rahvusraamatukogu seadus). It was established as the parliamentary library (Estonian: parlamendiraamatukogu) of Estonia on December 21, 1918.

According to the act, the National Library of Estonia is the custodian of Estonian national memory and heritage, and acts as the repository centre of the Estonian literature and national bibliography, the main information provider for the Estonian parliament and many other constitutional institutions, a national centre of library and information sciences, a site for the continuing education of librarians, and also as a cultural centre.

From 1984 to 1991, Ivi Eenmaa was the Director of the National Library and from 1991 to 1998 the Director General. From 1998 to 2008, Tiiu Valm was the Director General. From 2008 to 2023, the Director General of the National Library was Janne Andresoo [et]. In 2023 Martin Öövel was elected as the head of the National Library.

The National Library of Estonia is:

The National Library of Estonia provides information services in the following fields:

Rare book collection specialists offer consultations on old books. There are also archival services on the basis of the institution and personal collections located in the library, conservation services and binding services available.

E-library has been developed since the mid-1990s and is available on the homepage of the National Library of Estonia. It enables readers to:

Some services are available only to the registered readers of the National Library. They can: