This paper analyses the applications of Operations Research in various forms and techniques in the sector of Retailing, Indian and International. Retailing is the fastest growing sector with a lot of scope for improvement. The expectations of the customers from this sector are very high and so in order to sustain, the firms need to satisfy the demands efficiently. Along with this they also need to maintain their costs and at the same time generate higher revenues. To establish our points, we will be focusing on the few main aspects of Retailing such as Logistics, Supply Chain Management, and Warehousing and thus show how Operations Research techniques like transportation, simulation, the analytical model can be used to decrease costs, hence making more profits and improving efficiency in totality.