The master’s thesis is proposal of loyalty program of food reailer, which should serve as a tool for building relationship with the costumers and potential for creating competitive advantage. In order to program be best used by the company, should serve an analysis of current situation in the company, then also present loyalty program analyses and analyses of needs and wisch of company’s costumers, as well as researching loyalty programs in other companies in Czech Republic and foreign countries. Klíčová slova