Metropolitan regions have become one of the most appropriate scales to define efficient governance networks for economic and territorial development. The state still is the key actor of these partnerships. Yet the question remains whether cross-border metropolitan regions represent a new point of reference that puts state power in question or whether they only reorganize it. The centrality of state power will be examined by looking at two networks of actors (public transport and territorial marketing) working at the Eurometropolis Lille–Kortrijk–Tournai. The results reveal that a triple-faceted state power has emerged to define and organize cross-border metropolitan management.