This chapter explores the securitisation of Islamism in Egypt, tracing the state’s evolving strategies from overt repression to complex forms of control aimed at consolidating authoritarian power. It examines how successive regimes—from Nasser to Sisi—have framed Islamist movements, particularly the Muslim Brotherhood, as existential threats to national security, thus justifying extraordinary measures such as mass arrests, media censorship and legal restrictions on dissent. Through the lens of securitisation theory, the chapter investigates how these policies have been institutionalised and legitimised, especially in the wake of the Arab Spring and the rise and fall of Mohamed Morsi. It also situates Egypt’s internal political strategies within broader regional and international dynamics, highlighting the roles of Gulf allies like Saudi Arabia and the UAE in supporting counter-Islamist repression, as well as the ambivalent stances of Western powers balancing security concerns with human rights advocacy. By analysing the long-term societal impacts—including curtailed political freedoms, weakened civil society and the potential for increased radicalisation—the chapter provides an assessment of how securitisation has shaped Egypt’s political trajectory and regional posture.