The luxury branding industry thrives on creating products and services that are exclusive in nature. To achieve this, brands often control for pricing, quality, quantity and availability to create a perception of exclusiveness. The literature showcases a handful of concepts to explain how marketers can create exclusive products and services. However, the literature does not give a theoretical foundation to the creation of the Theory of Exclusivity. This study is the first to address this issue. A number of theories and concepts in marketing, psychology, sociology and other fields of sciences have been reviewed to conceptualise the Theory of Exclusivity. The conceptualisation of this theory gives marketers a better understanding of how they can create exclusive brands.