Discourses in Foreign Policy are Important, especially as case studies in International Relations. They articulate floating signs from the discourses of each country around their central sign and turn them into moment. By creating a nonrival, they identify foreign relations of the countries. Then, they recognize other discourses and compete with them. In today's Middle East, given that the region has always been tense, the three discourses of the Islamic Revolution on the part of Iran, moderate Islam on the part of Turkey, and Salafi-Takfiri on the part of Saudi Arabia have identified each other as non-identical and are competing with each other. Because every discourse seeks to be hegemonic, these discourses also seek to maximize their influence in the Middle East. Despite of the presence of such discourses, the purpose of this article is to compare them. Therefore, the main question of this article is that "in comparing the above-mentioned discourses, which is guided by the three regional powers of Iran, Turkey and Saudi Arabia, what are the similarities and differences? To answer this question, the research method is debate and comparative. The general conclusion of the article also shows that the three discourses of the Islamic Revolution, moderate Islam, and Salafi-Takfiri are all derived from the floating signs of Islam. However, considering the cultural, religious, social, political and historical situation of the three countries of Iran, Turkey and Saudi Arabia, in various forms around the different central signs, they are articulated and reject each other as rivals.