National Libraries of the World

United States

International

Argentina

 Biblioteca Nacional de la República Argentina.
http://www.bibnal.edu.ar/

Australia

 National Library of Australia.
http://www.nla.gov.au/

Austria

 Österreichische Nationalbibliothek. Austrian National Library.
http://www.onb.ac.at/

Belarus

 National Library of Belarus
http://natlib.org.by/

Belgium

 Bibliothèque Royale Albert 1er. Royal Library Albert I.
http://www.kbr.be/

Brazil

 Biblioteca Nacional.
http://www.bn.br 

Canada

 National Library of Canada.
http://nlc-bnc.ca/

Chile

 Biblioteca Nacional de Chile.
www.bibliotecanacional.cl 

China

 National Library of China.
http://nlc.nlc.gov.cn/

Colombia

 Biblioteca Nacional de Colombia.
http://www.presidencia.gov.co/

Croatia

 Nacionalna i sveucilisna knjiznica u Zagrebu. National and University Library Zagreb.
http://www.nsk.hr/

Czech Republic

 Národní knihovna Ceské republiky (NK). The National Library of the Czech Republic.
http://www.nkp.cz/

Denmark

 Det kongelige bibliotek. The Royal Library.
http://www.kb.dk

Estonia

 Eesti Rahvusraamatukogu. National Library of Estonia.
http://www.nlib.ee/i_index.html

Faroe Islands

 Føroyar landsbókasavn. The National Library of the Faroe Islands.
http://www.flb.fo/english/

Finland

 Helsingin yliopiston kirjasto - Suomen kansalliskirjasto. The Helsinki University Library - The National Library of Finland.
http://linnea.helsinki.fi/hyk/

France

 Bibliothèque nationale de France. French National Library.
http://www.bnf.fr/

Germany

 Die Deutsche Bibliothek. The National Library of Germany.
http://www.ddb.de/

Hungary

 Országos Széchényi Könyvtár (OSZK). National Széchényi Library.
http://www.oszk.hu/

Iceland

 Landsbókasafn Íslands - Háskólabókasafn. The National and University Library of Iceland.
http://www.bok.hi.is/

Indonesia

 Perpustakaan Nasional.
http://www.pnri.go.id/

Ireland

 National Library of Ireland. Leabharlann Náisiúnta na hEireann .
http://www.heanet.ie/natlib/

Italy

 Biblioteca Nazionale Centrale di Firenze. The Central National Library of Florence.
http://www.bncf.firenze.sbn.it

Jamaica

 National Library of Jamaica.
http://www.nlj.org.jm

Japan

 National Diet Library.
http://www.ndl.go.jp/index-e.html

Korea

 National Central Library.
http://203.237.248.5/

Latvia

 Latvijas Nacionala Biblioteka. National Library of Latvia.
http://vip.latnet.lv/lnb/

Luxembourg

 Bibliothèque Nationale.
http://www.etat.lu

Macedonia

 Narodna i univerzitetska biblioteka "Sv. Kliment Ohridski". National and University Library "St. Kliment Ohridski".
http://www.nubsk.edu.mk/

Malaysia

 Perpustakaan Negara Malaysia. National Library of Malaysia.
http://www.pnm.my/

Mexico

 Biblioteca Nacional de Mexico.
http://biblional.bibliog.unam.mx/bib01.html

Namibia

 National Library of Namibia.
http://yaotto.natlib.mec.gov.na/

Netherlands

 Koninklijke Bibliotheek. National Library of the Netherlands.
http://www.kb.nl/

New Zealand

 National Library of New Zealand.
http://www.natlib.govt.nz/

Nigeria

National Library of Nigeria
http://www.nlbn.org 

Norway

 Nasjonalbiblioteket. The National Library of Norway.
http://www.nb.no/english

Peru

 National Library of Peru
http://www.bnp.gob.pe/

Poland

 Biblioteka Narodowa
http://www.bn.org.pl/

Portugal

 Biblioteca Nacional. National Library of Portugal.
http://www.bn.pt/

Russia

 Rossiiskaia gosudarstvennaia biblioteka. Russian State Library.
http://www.rsl.ru/

Scotland

 National Library of Scotland
http://www.nls.uk/

Singapore

 National Library Board of Singapore.
http://www.lib.gov.sg

Slovak Republic

 Slovenská národná kniznica v Matici slovenskej. The Slovak National Library in Matica slovenská.
http://www.matica.sk/

Slovenia

 Narodna in univerzitetna knjiznica v Ljubljani. National and University Library Ljubljana.
http://www.nuk.uni-lj.si/

Spain

 Biblioteca Nacional. National Library of Spain.
http://www.bne.es

Sweden

 Kungliga Biblioteket. The Royal Library.
http://www.kb.se

Switzerland

 Schweizerische Landesbibliothek. Bibliothèque Nationale Suisse. National Library of Switzerland.
http://www.snl.ch/

Taiwan

 National Central Library.
http://www.ncl.edu.tw/

Turkey

 Millî Kütüphane. National Library of Turkey.
http://www.mkutup.gov.tr/

United Kingdom

 British Library.
http://portico.bl.uk/

Wales

 Llyfrgell Genedlaethol Cymru. National Library of Wales.
http://www.llgc.org.uk