Australia

National Library of Australia

  • WH: 5,750,866
  • OR: 2,189,382

Barbados

National Library Service

  • WH: 23,955
  • OR: 5,454

Botswana

The Botswana National Library Service

  • WH: 43,993

Chile

Biblioteca Nacional de Chile

  • WH: 13,827
  • OR: 10,423

China

The National Library of China

  • WH: 4,231,090
  • OR: 2,604,336

Czech Republic

National Library of the Czech Republic

  • WH: 867,369
  • OR: 784,111

Denmark

Det Kongelige Bibliotek

  • WH: 2,590,720
  • OR: 2

Danmarks Pædagogiske Bibliotek

  • WH: 469,671
  • OR: 222,427

Finland

The National Library of Finland

  • WH: 753,525
  • OR: 717,640

France

Bibliothèque nationale de France

  • WH: 18,920,092
  • OR: 18,151,940

Germany

Deutsche Nationalbibliothek

  • WH: 15,654,201
  • OR: 11,197,525

Hungary

National Séchényi Library

  • WH: 16,355
  • OR: 16,357

Ireland

The National Library of Ireland

  • WH: 156,458
  • OR: 37,075

Israel

The National Library of Israel

  • WH: 2,369,507
  • OR: 1,624,719

Jamaica

The National Library of Jamaica

  • WH: 36,737
  • OR: 23,455

Japan

National Diet Library of Japan

  • WH: 5,536,340
  • OR: 5,099,772

Lebanon

Lebanese National Library

  • WH: 43

Lesotho

Lesotho National Library and Archives

  • WH: 1,932

Liechtenstein

Liechtenstein State Library

  • WH: 298,877

Lithuania

National Library of Lithuania

  • WH: 203

Malaysia

Perpustakaan Negara Malaysia

  • WH: 1,947,076
  • OR: 349,886

Mexico

Biblioteca Nacional de Mexico

  • WH: 428,675
  • OR: 322,152

Namibia

The National Library of Namibia

  • WH: 33,629

Netherlands

Koninklijke Bibliotheek

  • WH: 40,244,079

New Zealand

The National Library of New Zealand

  • WH: 1,913,991
  • OR: 937,662

Norway

Nasjonalbibliotekets

  • WH: 0
  • OR: 474

Poland

Biblioteka Narodowa

  • WH: 2,760,983
  • OR: 2,047,337

Russian Federation

The National Library of Russia

  • WH: 4,061

Russian State Library

  • WH: 158

Singapore

National Library Board

  • WH: 2,027,761
  • OR: 448,947

South Africa

The National Library of South Africa

  • WH: 274,250
  • OR: 176,894

Spain

Biblioteca Nacional

  • WH: 4,647,646
  • OR: 4,336,225

Swaziland

The Swaziland National Library Service

  • WH: 2,507
  • OR: 2

Sweden

Kungl. Biblioteket

  • WH: 9,030,537
  • OR: 8,310,514

Switzerland

The Swiss National Library

  • WH: 1,264,698
  • OR: 678,176

Taiwan

National Central Library

  • WH: 1,036,337
  • OR: 498,500

Turkey

Milli Kütüphane

  • WH: 496

United Kingdom

The British Library

  • WH: 20,669,068
  • OR: 9,819,192

The National Library of Scotland

  • WH: 5,096,627
  • OR: 1,855,280

The National Library of Wales

  • WH: 258,924
  • OR: 47,815

United States

Library of Congress

  • WH: 12,960,008
  • OR: 12,324,675

National Agricultural Library

  • WH: 988,129
  • OR: 413,542

National Library of Education

  • WH: 78,530
  • OR: 19,978

National Library of Medicine

  • WH: 3,700,391
  • OR: 3,366,778

WH = Number of WorldCat holdings OR = Number of original records

Data current as of March 2017