In this paper, we present an empirical study for ranking different barriers on developing e-business in one of the free zones called Kish Island in. This Island is located in south part of Iran and it is one of the most beautiful free zones of this country with tremendous opportunities for tourism industry. The proposed study gathers important factors in five different groups of economical, social and cultural, political, technology and software packages. In each group, decision makers determine various influencing factors and after three rounds of brainstorming, analytical hierarchy process is used to rank these factors. Based on the results, the lack of a good infrastructure (0.206), the lack of good culture among ordinary people to use e-businesses (0.205), the lack of good knowledge on internet services among ordinary people (0.204) are some of the most important factors preventing e-business in this region.