Many of the Swedish gazelles never leave the domestic market and often have a problem with leaving the start-up phase. One problem for the gazelles is that many are stagnating within a couple of years and few ever reach more than 50 employees. The purpose of this research is to extend the knowledge on how Swedish gazelle companies can continue to grow through internationalization. The thesis has used a qualitative method with an abductive approach. The research is based on a multiple case study of three gazelle companies where the data was collected through in-depth interviews.