The political economy of a country and international security is a cross-cutting issue that creates its own identity and political function to each other. The purpose of this study is to examine the political economy of Iran and its role in international security. At first, using the theory of logical deterrence, the political economy of Iran was examined and then its role in international security was evaluated. This research is based on the descriptive-analytical method and first-hand library data. The findings of the study show that many factors such as oil, free zones, government policy, Iranian industry, economic sanctions have a significant impact on the political economy of Iran, and their impact is such that it causes problems at some historical junctures. It has become a threat to the country's economy and, as a result, to Iran's national security. From the findings of the study, it can be concluded that in a global system in which there is a constant global security, countries need to be in a good political economy. Economic security is one of the essential prerequisites for political stability. Otherwise, there will be national security, regional security, and ultimately the global expansion of security and insecurity.