The Adriatic Guard was founded on February 19th, 1922, in Split, in the wake of World War I, the founding of the Kingdom of Serbs, Croats, and Slovenes, and Italy’s occupation of the eastern Adriatic coast. This nominally apolitical civilian organization set its sights reorientating the newly founded Kingdom towards the Adriatic Sea, both economically and militaristically. Under its banner, it gathered thousands of people, and through its propaganda, it spread its postulates far and wide, both in the interwar Yugoslavia and beyond, among the Yugoslavian emigrants. This thesis seeks to set the Adriatic Guard in a wider context: by looking at its activities in direct or indirect service of the state’s integral Yugoslav ideology and the way it mobilized the Adriatic Sea to advance its goals. It also analyses the relationship between the Belgrade and Split councils as two main factors in the Adriatic Guard, taking into account the complex conflicts of the federalist Croatian and centralist Serbian in the nation’s politics. In this way, a new perspective of the Adriatic Guard is given. It was everything but apolitical, setting itself openly in the service of the regime’s integral Yugoslav ideology, and letting the everyday national politics seep into its very being. This thesis is a small contribution to the as of yet modest historiography on the Adriatic Guard, and serves as an incentive for further research.