In 2004, Triglav National Park was awarded the The European Diploma of Protected Areas for its exceptional character, its European importance in terms of nature conservation and landscape diversity, and its significance as a protected area. The recommendations and commitments of the Council of Europe, which the Triglav National Park Public Institution and thus the Republic of Slovenia received with the Diploma and its renewal in 2009, are an integral part of the Triglav National Park Public Institution's work programmes. Each year, the Triglav National Park Public Service prepares annual reports on the state of the park and on compliance with or progress towards the conditions and recommendations. The European Diploma of Protected Areas was extended in 2019 until 5 May 2029.
In 2003, the UNESCO Office in Paris adopted a decision to include the Julian Alps and the Triglav National Park in the international network of MAB (Man and Biosphere) Biosphere Reserves, making the Julian Alps part of a global network of model regions for sustainable development. This decision marks the first time Slovenia has been included in the MAB network.
UNESCO - the United Nations Educational, Research and Cultural Organisation - established the MAB programme in 1968 to study the impacts of human activities on changes in the living environment and to promote sustainable and sustainable development.
The cooperation between the Triglav National Park and the Julian Prealps Natural Park dates back to 1996. The networking and cooperation started with the first partnerships in various European Union projects and has grown over the last twenty years into a strong bond and cooperation in various fields, such as European Union projects, exchange of good practices, exchange of school groups, joint presentations at fairs and events. In 2007, the idea of a cross-border park was born and in 2009, the Europarc Federation officially launched a new form of cross-border cooperation - the Julian Alps Ecoregion, which also includes the Slovenian UNESCO MAB site.
In 2016, Europarc awarded the Triglav National Park with the Julian Alps UNESCO MAB Biosphere Area and the Julian Prealps Natural Park with the Sustainable Development of Tourism in Protected Areas Award, the first transboundary protected areas in Europe to receive such an award. The Europarc Federation is committed to the conservation of nature, cultural landscapes and sustainable development. Its mission is to promote improvements in protected area management through the exchange of good practices and policies, and to help protected areas face the challenges they face on a daily basis. Its slogan for sustainable tourism is Good for Parks, Good for People!
In 2014, the Alpine Convention recognised the Triglav National Park and Julian Prealps Natural Park in Italy as official cross-border pilot regions for ecological connectivity. The designation makes the two protected areas the ninth such pilot region in the Alps. The designation recognises the efforts made towards sustainable development and will enable cooperation on nature protection with other pilot regions and support for ongoing and planned projects.
The Triglav National Park was awarded the Europa Nostra Diploma in the Architectural Heritage category of the 2006 European Union Prize for Cultural Heritage for its work on the renovation of the Pocar Homestead in Zgornja Radovna. The explanatory memorandum for the award, which was given to the Pocar Homestead, states that the Triglav National Park is receiving this diploma for 'the subtle use of traditional skills and materials in the preservation of a rare and authentic example of 18th century Alpine architecture and the preservation of ethnological heritage and related local income-generating opportunities'.