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.