Transitions away from fossil fuels need to be governed, financed, regulated and coordinated, patterns of production and innovation need to be steered and shaped by rulemaking bodies at all levels of authority. For this to happen across a highly uneven international system, global institutions have a vital role to play in supporting and implementing just transitions (JTs) that align with principles addressing the procedural, distributional, intergenerational and recognition based aspects of justice and which help to address the temporal and spatial as pects of transitions. In this paper, we review the ways in which global institutions are involved in the governance of JTs. We illustrate the roles these institutions are playing through three key areas vital to JTs: the (i) governance of finance (ii) labour protection and (iii) mobilising alternatives. To make sense of the diverse and uneven nature of these engagements and their implications, we explore in turn four key gaps in the way global institutions are approaching the issue of JTs.