This article is going to discuss the future of Iran's Foreign Policy, using future studies modeling, especially scenario planning. It describes future forecasting, probability, uncertainty, future memories, and scenario making. Such as any other documents based on strategic thinking, a framework for future of Iran's foreign policy needs attention to strategic elements as Vision, Mission, Goals, Strategies, Policies and Operational Policies. Regarding Vision, Iran's twenty Year Perspective Document for Iran which shows landscape of Iran's social, political, and economic development would be the base of any decision making. Iran's Islamic Republic Constitution would be framework for mission and goals of Iran. Long-term strategies at foreign policy are discussed in conjunction with decision making process, structure, process, and future. The Islamic Republic of Iran has constructed a unique administrative apparatus that blends parallel lines of deliberation from both its religious hierarchy and its parliamentary democracy. For foreign policy and international relations, the decision-making process brings to bear the most important administrative bodies of both the government and the religious hierarchy. These different bodies help to comprise a system of checks and balances for some of the more pivotal levels in the deliberative process, i.e. the Foreign Ministry, the High Council for National Security (HCNS), the Presidency, and the Supreme Leader. We also see individual decision makers as agentcentered factionalism, which is an informal, though important part of the process. We have done also analysis of Strengths, Weaknesses, Opportunities, and Threats (SWOT). This article proposes more attention to regionalism as key policy of Iran's foreign policy. Also, the article emphasizes to understanding globalization, energy security, and Asian identity as major roadmaps for Iran's foreign policy.