This article discusses stakeholder engagement in the field of nuclear and radiological emergency preparedness, response, and recovery (EPR & R). It argues that stakeholder engagement in this field could be broadened – in terms of stakeholders and forms of engagement, and strengthened – in terms of sustainability and impact. Four different dimensions are identified and presented along which this process of broadening and strengthening can occur: (1) the underlying rationales of engagement, (2) top-down and bottom-up engagement, (3) formal and informal engagement, and (4) radiological protection culture. Based on the analysis of these dimensions, a reflection on power and non-participation is provided, and recommendations on stakeholder engagement are formulated.