Under Article 17 (3) TFEU, the European Union maintains a dialogue with religious communities. Does that encourage dialogue between different religious communities, too? Should it be encouraged by public authorities at all? Searching for answers, the speaker, starting from the legal basis, analyses which religious communities and interreligious organisations have registered as dialogue partners with the EU. One hypothesis could be that several religious communities engage in multilateral consultations or even join forces organisationally in order to present a single and thus more effective voice to the EU. However, this has only happened to a limited extent. One should ask, too, whether the EU directly stimulates interreligious dialogue. As is shown, it does, but only in specific areas where it seems useful, such as peace, migration and integration. Few interfaith organisations like ENORB exist whose establishment was motivated by the EU's article on dialogue. Cooperation between different Christian denominations is more common than cooperation between different religions. The dialogue with the EU and the dialogue between religious communities can complement each other, but should not be mixed up. The public authority has to respect religious freedom when involving in interreligious dialogue.