\u3cp\u3eInterventions aimed at the enhancement of positive organisational behaviours, within organisational contexts, are imperative for creating and sustaining a high-performance culture, where individual and organisational strengths are optimized and top-talent retained. Psychological ownership, one form of positive organisational behaviour, comprises of self-identity, belongingness, self-efficacy, accountability and territoriality, and is a critical factor in the enhancement of individual performance. Despite this importance, limited research exists regarding evidence-based positive psychological intervention strategies aimed at the development of psychological ownership within organisational contexts (Olckers and van Zyl in Soc Ind Res 127(2):887-901, 2016). As such, the purpose of this chapter will be to propose evidence-based intervention strategies centred on the development of self-identity, belongingness, self-efficacy, and accountability as well as the management of territorial behaviours within multi-cultural contexts from a positive psychology perspective. This chapter aims to present both the theoretical implications and practical guidelines for building psychological ownership.\u3c/p\u3