This research paper measures the impact factor of Mega Sport Event (MSE’s) on the inward tourist flows of the hosting country. The theoretical background of MSE’s are discussed, including reasons against and in favor of hosting. A theoretical and a statistical model are constructed based on the variables indicated in academic literature to contribute to a country’s tourist numbers. A panel data analysis is conducted on a dataset with variables from UNWTO, UNCTAD, and the World Bank. The findings indicate that MSE’s are a poor tool to attract tourists, and suggest tentatively that MSE’s only attract tourists for countries with an already existing high tourist value offering.