The Somali diaspora has played a pivotal role in shaping the religious, political, and social landscape of Somalia, with Salafism emerging as a significant influence. Over recent decades, diaspora networks have channeled ideas, funding, and religious teachings into Somalia, contributing to the spread of Salafist ideology. This trend has had wide-ranging effects on Somali society, impacting governance, community values, and security dynamics. Politically, Salafism intersects with the country’s fragile state institutions, influencing local leadership and policy decisions. Socially, it has redefined norms, education, and community structures, while also fueling debates around identity and tradition. Security-wise, the ideology has been linked directly or indirectly to tensions between different factions and increased radicalization risks. Across the Horn of Africa, these changes resonate beyond Somalia’s borders, shaping regional stability and international relations. Understanding the diaspora’s role in promoting Salafism is essential for policymakers, researchers, and community leaders seeking to address both the opportunities and challenges it presents. This analysis sheds light on the complex interplay between migration, religion, and political transformation in Somalia today.