The silencing of the epistemologies, theories, principles, values, concepts and experiences of the global South constitutes a particularly egregious epistemic injustice in bioethics. Our shared responsibility to rectify that injustice should be at the top of the ethics agenda. That it is not, or only is in part, is deeply problematic and endangers the credibility of the entire field. As a first step towards reorienting the field, this paper offers a comprehensive account of epistemic justice for global health ethics. We (...) first introduce several different conceptions of justice and decolonisation in relation to knowledge, purposefully drawing on work emanating from the global South as well as the global North. We then apply those conceptions to the global health ethics context to generate a tripartite account of the layers of epistemic justice in the field: who is producing ethics knowledge; what theories and concepts are being applied to produce ethics knowledge; and whose voices are sought, recorded and used to generate ethics knowledge. These layers reflect that the field spans conceptual and empirical research. We conclude by proposing that, going forward, three avenues are key to achieve greater epistemic justice at each layer and to help decolonise global health ethics: namely, understanding the problem, dialogue and structural change. (shrink)