Iran's Islamic Republic maintains a legal system rooted in strict interpretations of Sharia law, under which same-sex relations are criminalized with penalties up to execution, and marriage is explicitly defined as between a man and a woman. The Supreme Leader and clerical institutions hold decisive authority over such matters, with no legislative proposals, judicial rulings, or policy announcements in recent years indicating any shift toward recognition of same-sex unions. This entrenched framework, reinforced by official statements and constitutional principles, drives the overwhelming trader consensus that legalization remains off the table. Only a fundamental transformation in governance or leadership could open that possibility, though such scenarios carry high uncertainty and low near-term probability.