Geopacifics has been considered as the objective representation of nations’ and governments’ movement toward peace. Today, countries have tried to achieve it by means of different solution such as general, economic, sport and cultural diplomacies. Among them, one of the important methods is cultural diplomacy by which every country tries to communicate with others depending on its various cultural capabilities and cultural policies. In this regard, tourism is one of the most important cultural tools for better introduction of countries’ cultural policies and expansion of geopacifics in regional and global levels. Present study addresses this topic by descriptive-analytical method and library study. The investigated point of this paper is that Iran has to properly use its cultural diplomacy to reach to a sustainable national security to provide geopacifics in the region. The geographical and geopolitical position of Iran and its various cultural and tourism attraction in addition to its rich ancient civilization are among the important topics in cultural diplomacy of Iran.