Disarmament is often characterized as a necessary condition for peace to prevail in the aftermath of civil conflicts. Yet implementation is contingent on what has been negotiated behind closed doors, a process that so far has received little attention. Without knowledge of the positions, motivations, and interests of parties involved in disarmament negotiations, our understanding of particular disarmament outcomes remains incomplete. To fill this gap, we examined negotiations on disarmament in Colombia, Nepal, the Philippines, South Sudan, and Sri Lanka. Our findings focus on the degree of inclusivity in the negotiations, the symbolic relevance of disarmament, and the various roles of external parties in disarmament negotiations.