The promotion of "Global Citizenship" (GC) has emerged as a goal of schooling in many countries, symbolising a shift away from national towards more global conceptions of citizenship. It currently incorporates a proliferation of approaches and terminologies, mirroring both the diverse conceptions of its nature and the socio-politico contexts within which it is appropriated. This paper seeks to clarify this ambiguity by constructing a typology to identify and distinguish the diverse conceptions of GC. The typology is based on two general forms of GC: cosmopolitan based and advocacy based. The former incorporates four distinct conceptions of GC -- namely, the political, moral, economic and cultural; the latter incorporates four other conceptions -- namely, the social, critical, environmental and spiritual. Subsequently, we briefly illustrate how the typology can be used to evaluate the critical features of a curriculum plan designed to promote GC in England. The typology provides a novel and powerful means to analyse the key features of the very diverse range of educational policies and programmes that promote GC.