Iran's leadership succession represents one of the most significant political uncertainties in the Middle East as 2026 approaches its end. This event aggregates six closely related prediction markets that collectively measure global consensus on who will serve as Iran's head of state entering 2027. The markets track the perceived likelihoods of specific political figures—Mojtaba Khamenei, Reza Pahlavi, Abbas Araghchi, and Ahmad Vahidi—alongside the scenario that no individual holds the position by year's end. These markets are grouped together because their outcomes are deeply interdependent: the probability that any one candidate becomes head of state directly constrains the likelihood of others, and all outcomes depend on Iran's constitutional processes and geopolitical circumstances. When reading the prices below, recognize that they reflect aggregate sentiment from participants closely monitoring Iranian politics, international relations, and historical precedent. Markets displaying higher prices indicate participants perceive greater probability, while price movements reveal how new information—diplomatic statements, internal political developments, or international events—shifts expectations across the board. The specific candidates represent distinct constituencies and potential pathways: some are figures with deep institutional backing within the current system, while others would signal more dramatic political change. By comparing which market prices rise and fall in tandem, you can discern not just individual assessments, but the underlying political narratives and scenarios that participants view as more or less likely to coexist. This bundled view illuminates how informed participants—including analysts, researchers, and those with direct exposure to Iranian affairs—are collectively assessing one of the world's most opaque and geopolitically consequential political situations.