In the face of complex societal challenges, stakeholder participation/engagement and knowledge co-production have become increasingly important to the sustainability sciences. Why and how these stakeholders are identified frequently remains unclear, which raises concerns regarding rigor and procedural justice of research processes. Against this background, this paper seeks to contribute to a better understanding of how and why procedural justice issues materialize in stakeholder identification and assess the extent to which they can be addressed. We build on proposals for stakeholder identification in the academic literature that integrate three common approaches: analytical, sampling, and participant-based approaches. Further zooming into these approaches and related methods through a procedural justice lens, we show how the inclusion of stakeholders, the influence of stakeholders on the identification process, and the transparency of the overall identification process matter. We draw upon our own case study experiences to share the lessons learned, including the benefits of systematic mapping approaches for stakeholder identification. We conclude that stakeholder mapping facilitates accurate documenting of identification procedures and supports iterative refinement and adjustments of the stakeholders identified, whilst also creating reflexive potential to address intuitive and past experience-based practices, ultimately opening promising avenues to advance procedural justice in stakeholder identification.