This study delves into the role of social media in the realm of Islamist militancy, with a particular emphasis on Bangladesh, a country with the third-largest Muslim population. Employing a content analysis approach, this study finds that while explicit calls to join Islamist militancy are rare, social media platforms contribute to the creation of a moral foundation for militant ideology and provide justification for violent acts. Additionally, the study highlights the influence of social media in motivating young individuals to participate in Islamist militancy, although the direct impact of online radicalisation on real-life actions remains uncertain. The findings underscore the need for further research on the dynamics between social media and Islamist militancy and their implications for countering militant ideologies.