The subject of the bachelor's thesis is the design of green marketing communication of the Greeneo e-commerce store. The theoretical part is focused on the specifics of e-commerce, green marketing and marketing communication. Subsequently, the work deals with selected communication channels and their content. The practical part was focused on the analysis of main competitors and a survey conducted on a sample of 150 respondents. The research analyzed consumer behaviour and preferences of respondents aged from 17 to 30 years. Based on the data from the competitive analysis, the results of the questionnaire survey and the findings from the theoretical part of the work, recommendations were formulated in order to successfully enter the market with green products.