The Black Sea Trust for Regional Cooperation (BST) is a grantmaking initiative based in Bucharest, Romania. It was created in 2007 by The German Marshall Fund of the United States, with the support of the United States Agency for International Development (USAID), Charles Stewart Mott Foundation, the Ministry of Foreign Affairs of Romania, the Government of Latvia, and the Lynde and Harry Bradley Foundation, the Robert Bosch Stiftung and Calouste Gulbenkian Foundation and the European Commission.

For over a decade now, BST has been strengthening regional cooperation, civil society, and democratic foundations in the countries of the Black Sea region. In particular, BST has focused on building trust among citizens and in the public institutions, affirming the value of citizen participation in the democratic process, promoting the involvement of civil society in conflict resolution, and fostering regional cross-border ties in the public, private, and nonprofit sectors. In this regard, it organizes regular study tours to countries in the region and other events of interest to the regional political climate and coordinates research.

BST will committed to continue to offer support in the democratic climate in the targeted regions, not only through grantmaking, but also through its policy and leadership development programs. BST will also keep promoting regional views on issues of importance to both the region and the international community, such as security, democracy, and European policies toward the neighborhood.