The European Union’s cross-border cooperation policy is regarded as a key instrument through which to promote regional cohesion, competitiveness and identity. This paper studies performances of regional identity within the framework of the EU’s INTERREG North cooperation, and especially in the Finnish/Swedish border area. The performativity approach shifts the focus from the question of whether regional identities are fixed or hybrid, and thick or thin, toward the question of how regional identities are manifested in border regions. The point of departure in the study, based on policy documents, fieldwork and interviews with local actors involved in the implementation of the INTERREG initiatives, is that spatial identity is not a feature that regions have but something that is actively performed. Performances of regional identity in this northern border region do not create continuous and parallel sets of practices. Instead, different kinds of directions and disjunctures emerge in and between different interest groups for which local, national and transnational all serve as important scales of coming-togetherness and differentiation.