The Goal of the Master's thesis is to create a marketing plan for a specific company. The first part contains chapters that capture the theoretical foundations needed to build a marketing plan. The practical part deals with the Phyto CZ, Ltd. Company which operates in the production and sale of food supplements. It contains the steps needed to develop a marketing plan. First, the company's marketing mix a selected elements of situational analysis are analysed, with the results of a questionnaire survey added. Subsequently, the company is recommended a set of objectives for the future, including a proposal of specific marketing procedures which could lead to their achievement.