International cooperation
Through its cooperation with professionals and researchers on an international level through projects, international exhibitions and its staff participating in the work of various international associations, NSK, the National and University Library in Zagreb, globally promotes Croatia’s cultural heritage, increases the visibility of the national research output and makes significant contribution to the transfer of knowledge and technologies on an international scale.

International exhibitions
Exhibitions make a significant part of NSK’s international cooperation activities. Along with presenting Croatian cultural heritage all around the world, exhibitions also enable us to bring closer to Croatia’s general public the rich heritage of other countries.
Particularly standing out among NSK’s collaborative international exhibitions are:
- Wealth of colour and tradition, The St. Cyril and Methodius National Library of the Republic of Bulgaria, 2022
- L’arte del libro in Croazia (Book Art in Croatia), The European Library in Rome, Italy (Biblioteca Europea Roma), 2022
- Croatian literature and cultural heritage from the Middle Ages to modern times (Hrvatska književnost i kulturna baština od srednjeg vijeka do modernog doba), National Library of Korea, 2021
- Marko Marulić – A European Humanist, Solothurn Central Library, Switzerland, 2021
- Martynas Mažvydas National Library of Lithuania, 2020; Šiauliai County Povilas Višinskis Public Library, Lithuania, 2020; Klaipėda County leva Simonaitytė Public Library, Lithuania, 2020; Kaunas County Public Library, Lithuania, 2020; Panevėžys County Gabrielė Petkevičaitė-Bitė Public Library, Lithuania, 2020
- Croatian Glagolitic Heritage, Lithuanian Academy of Sciences and Kaunas County libraries, 2019
- Book Art in Croatia, The St. Cyril and Methodius National Library of the Republic of Bulgaria, 2019; National and University Library in Ljubljana, 2018; National Library of Latvia, 2007
- Sacred Tongue of My Predecessors: Croatian-Bulgarian Parallels, St. Kliment Ohridski University in Sofia, Bulgaria, 2017
- Days of Croatian Literature in Macedonia (Dani hrvatske književnosti u Makedoniji), The National and University Library St. Kliment Ohridski in Skopje, Macedonia, 2014

Particularly standing out among past international exhibitions hosted by NSK are:
- ENCOUNTER BETWEEN THREE WORLDS: 500 Years After the First Circumnavigation
- of the Earth (Encuentro de tres mundos: a 500 años de la primera circunnavegación del planeta), National Library of Chile and Embassy of the Republic of Chile to the Republic of Croatia (2023)
- Seamus Heaney: Listen Now Again, National Library of Ireland and Embassy of Ireland to the Republic of Croatia, 2023
- Dušan Karpatský – Known And Unknown (Dušan Karpatský (1935. – 2017.), znan i neznan, (Dušan Karpatský známý a neznámý)),Croatian-Czech Society, 2020
- Latvia’s Century, National History Museum of Latvia and Latvian Ministry of Foreign Affairs, 2019
- Israeli Discoveries and Developments That Influenced the World, Israeli Ministry of Science and Technology and Embassy of the State of Israel to the Republic of Croatia, 2017
- Discovering Hölderlin (Otkrivanje Hölderlina; Hölderlin Entdeckungen), State Library of Württemberg, 2015
- Days of Macedonian Literature in Croatia (Dani makedonske književnosti u Republici Hrvatskoj), The National and University Library “St. Kliment Ohridski” in Skopje, 2015
- Croatian Glagolitic Script: An old alphabet of Europe from the Middle Ages to the present day (L’Alphabet glagolitique croate — évocation d’une écriture médiévale européenne: du Moyen Âge à nos jours), Palace du Tau in Reims, France, 2012-13
Membership of international professional associations
Guided in its work by values such as openness and teamwork, the National and University Library in Zagreb takes part in the activities of major international professional associations, networks and programmes, encouraging cooperation, professional development, partnership and progress.
NSK and its professional staff are the members of the following international organisations and initiatives:
- CDNL – The Conference of Directors of National Libraries
- CENL – The Conference of European National Librarians
- DART Europe
- DOI – Digital Object Identifier
- EURIG – The European RDA Interest Group
- Europeana
- ENA – Europeana Network Association
- IAML – International Association of Music Libraries, Archives and Documentation Centres
- ICA – International Cartographic Association
- ICDL – International Children’s Digital Library
- IFLA – International Federation of Library Associations
- IIPC – International Internet Preservation Consortium
- Index Translationum
- International ISBN Agency
- International ISMN Agency
- ISSN International Centre
- LIBER – Ligue des Bibliothèques Européennes de Recherche
- UDC Consortium VIAF – Virtual International Authority File