Spanish Abstract: La securitizacion, como enfoque teorico, permite comprender las dinamicas que se producen cuando un asunto se considera un tema de seguridad. No obstante, cuando la religion se aborda como objeto referente, produce una dinamica tanto ofensiva como defensiva para responder a la amenaza. En este sentido, se analiza como el Estado Islamico realiza un proceso de securitizacion de la religion que se fundamenta en principios teologicos, y bajo el cual enmarca sus objetivos, legitima sus acciones, define al enemigo y controla a la poblacion. De esta manera, se acude al concepto de “ramas de la securitizacion” para comprender las diferentes audiencias a las que dirige su discurso salafista. English Abstract Securitization, as a theoretical approach, allows understanding the dynamic forces around an issue that is considered a security matter. However, when religion is approached from this perspective, it leads both to an offensive and a defensive dynamic to answer to a given threat. In this sense, this work studies how the Islamic State (is) carries out a process of securitization of religion based on theological principles that are used for establishing its objectives, legitimizing its actions, targeting the enemy, and controlling the population. In this way, the concept of “branches of securitization” is used in order to understand the different audiences to which is Salafist discourse is directed.