The diploma thesis deals with the creation of the marketing plan of the new event agency. The thesis consists of two parts - theoretical and practical. In the theoretical part are presented the foundation of marketing plan issues, parts of the marketing plan, its creation, goals setting, marketing mix, budget, action plan and control of marketing plan. A separate chapter deals with event marketing. In the practical part situational analysis and marketing research are implemented and then marketing objectives, strategy and marketing mix of the agency are determined, based on synthesis of its results. Finally, the budget, the action plan and the control of the implementation of the marketing plan are presented