Inspired from the movement of positive psychology, appreciative inquiry (AI) contributed immensely and continues to do so in organisational development (OD) from every aspect. As it is driven by the strength-based possibility-focused thinking approach, rather than the deficit thinking approach of problem solving inquiry method, appreciative inquiry helps in creating an overall positive environment in the organisation (practice of positive OD). The scope of appreciative inquiry, thus, is not only limited to organisational problem diagnosis and therapeutic realm, but has also spread out its wings in communication and relation building, change management, development programmes, and many more. This chapter, hence, has tried to emphasise and briefly discuss appreciative inquiry's vast scope, contribution, and positive approach in the sphere of organisational development.