Abstract The activities of extremist groups are perceived as a key threat to modern democracies. However, much remains unknown about the role families can play in prevention or disengagement from such groups. A scoping review identified seven studies that were eligible for inclusion. The findings suggest that there is limited, yet some, support for family-directed services to directly prevent engagement in extremist groups. Rather, family directed services may indirectly influence this by strengthening family members’ resilience and thus their ability to engage with the family member. Additionally, professionals working with families where a member is on a path to developing extremist ideology should continuously reflect upon their professional conduct and develop a narrative approach to reduce resistance. An important limitation to these findings is the different contexts and countries they have been conducted in, spanning from East Africa to Northern Europe.