The European Commission announced in Brussels that Japan has officially joined Horizon Europe as an associated country. The formal agreement took effect on July 30, 2026, marking a new milestone in international scientific partnership. This development connects European research frameworks directly with major international partners.
With a total population of 123 million people, Japan becomes the largest partner by population to join the scientific initiative. The country now holds the distinction of being the most populous nation associated to the programme. This addition expands the physical and demographic reach of the participating scientific community.
Through this partnership, Japan introduces one of the world's most advanced research and innovation ecosystems into the existing European framework. The integration is designed to enhance Europe's broader network of scientific cooperation across multiple domains. Both regions stand to build upon shared technological capabilities through formal institutional channels.