UNESCO heritage policies encourage the idea that heritage should be ‘shared' at the international scale, and invite States and the involved actors to adopt this vision. Yet ‘sharedness' can be understood in many different ways. In this article, we explore several territorial and political issues related to this notion of sharedness. A focus on the uses of a particular UNESCO tool—‘multinational nominations'— allows to shed light on transnational cultural practices and to examine forms of cooperation within communities and between States in the framework of the Convention for the Safeguarding of the Intangible Cultural Heritage (ICH). Specifically, we analyse the work of a French commission for ICH as well as the nomination processes of three different cultural practices to the ICH Lists: flamenco, falconry, and alpinism. We argue that ‘shared heritage' is interpreted in a variety of ways, leading to contrastive appropriations and competing territorial scenarios among the various protagonists.