This thesis examines the influence of state identity narratives on regional cooperation frameworks in Central Asia. It applies the perspectives of ontological security theory to the self-articulation of state identities of Kyrgyzstan and Turkmenistan to decipher socialization mechanisms in each of the cases. Consequently, it traces the routinization of the state narratives of Kyrgyzstan and Turkmenistan toward the region and regional organizations. Ontological security theory argues that, in addition to physical security, states seek ideational security, security of identity and security of being. Using a grounded theory approach to study the formation of the state narratives of Kyrgyzstan and of Turkmenistan and utilizing official and media sources and interviews conducted during fieldwork, the thesis analyzes the process of routinization of state identity narratives, showcasing the narrators, the narratives and the processes of self-articulation. The key process that is traced is the routinization of the state narratives, i.e. the sequence of repeated actions (inter-textualized through speech acts and textual references) that transform the self-articulated stories of the states into the realm of the habitual. This process of routinization is then analyzed within the regional context, examining how these routinized narratives influence inter-state cooperation in Central Asia. As such, the thesis contributes to two main bodies of literature: the growing literature on the ideational aspects of regional cooperation in Central Asia; and existing research on the role of state identification practices in the foreign policies of Central Asian states.