Abstract. This study was undertaken as a master’s thesis in marketing in the spring of 2016. The aim of the study is to investigate the role of marketing communications in the innovation commercialization process in start-up companies and offer guidelines for start-up companies on utilizing marketing communications tools in the commercialization of innovative products. The reason for choosing this particular topic is that start-ups have a major role in creating innovations, but they may have trouble with commercializing them. We believe that marketing communications have the potential to enhance the possibilities of a company to success in their commercialization process. This research is a qualitative case study of four start-ups that h...