Empirically growing transnationalism and normatively demanded cosmopolitanism may be closely connected when considered as different elements of new forms of citizenship beyond the single nation‐state. Do individuals with either full (dual citizenship) or partial (foreign resident) transnational status exhibit more cosmopolitanism than mono citizens? This article decodes the multidimensional character of cosmopolitanism using major democratic theories – liberalism, republicanism, and communitarianism. Multivariate regression analyses of data from a survey among mono citizens, dual citizens and foreign residents in Switzerland reveal that a transnational status is associated with cosmopolitanism in a differentiated way. Dual citizens and especially foreign residents are more likely than mono citizens to exhibit liberal cosmopolitanism; but only dual citizens having full political rights and opportunities in two countries are more likely to exhibit republican cosmopolitanism and only foreign residents excluded from the political community of residence are more likely to exhibit communitarian cosmopolitanism. Each of them can thus be considered as vanguards in specific ways. Our study furthermore demonstrates the added value of disaggregating both cosmopolitanism and transnationalism.