Societies and economies are, in part, structured and organised epistemically. However, who has the power to shape key territorial decisions and policies, and based on whose/which knowledges? Whose and which voices, practices, methods, problems, problem definitions and solutions matter in the process? Whose/which knowledge systems are legitimised or delegitimised? These are some of the questions that are raised in this paper on epistemic (in)justice. The discussion contributes to reflections on the development of action research pedagogies and methodologies, in particular on facilitating approaches and processes that are respectful and conducive to the central human capability of different people and groups to produce and receive knowledge. The genesis of the argument is rooted in a critical understanding of the on-going damages caused by epistemological hegemony and coloniality of power, and consciously working towards integrating perspectives of epistemic justice in our praxes. By stimulating the inclusion and participation of those who are marginalised, we contribute to countering dominant narratives and bringing forth nuanced perspectives of the lesser heard, and visible. With those in mind, I highlight the importance of epistemic governance, epistemic freedom, epistemic humility, and inter- and intra-territorial connectivity for enabling the co-creation of transformative relations, visions, spaces, dialogues, and actions in responding to climate change and the associated challenges.