Principles for ethical boundary spanning between science, policy and practice: A guide for knowledge brokers

Knowledge brokers have emerged as a key mechanism for facilitating knowledge exchange across institutional and epistemic divides to enable more inclusive, informed, and context-sensitive decision-making. However, despite growing recognition about their value and importance, critical gaps remain related to how knowledge brokers operate that hinders their effectiveness and efficiency in practice. One such gap relates to the ethical dimensions of their work, which remain underexplored and lack formal conceptualization. This perspective addresses this gap by examining the overarching ethical challenges knowledge brokers face, and proposing a set of twelve experientially-derived principles to guide more ethically grounded knowledge brokering. For each principle we also outline a suite of practical behaviours, attitudes and actions to support their realisation in practice. In doing so, our goal is to help recognize and engage with the depth of ethical complexity that knowledge brokers must navigate, support those working in these often-invisible roles, and contribute to a broader conversation about how to strengthen the interface of sustainability science, policy and practice. We conclude by calling for greater institutional support, leadership, and a shift toward ‘ethics by design’ approaches that embed ethical reflection and practices in knowledge brokering efforts from the outset.