This article analyses the sociological foundations of the elite power in the field of international criminal justice. Building on a multiple correspondence analysis of 365 elite agents, the article shows how different accumulations of cultural, economic and social capital structure relations between elite groups active in the fight against atrocity crimes. Building on its analysis of these forms of capital, the article investigates how different combinations of capital empower specific elites to broker connections between social groups in and at the border of the field of international criminal justice. Analysing such forms of intra- or inter-field brokerage, the article shows how they allow specific elites to access and exert institutional and networked power that can be used to affect existing and craft new international criminal justice initiatives.