Recent contributions in Geography and beyond have examined historical and more contemporary efforts to govern the future. Work in this area has highlighted some important conceptual considerations by drawing attention to the way in which states, regions and other organisations view the future as an object of governance for a variety of reasons: as something that constitutes a threat that needs to be managed; as something that can be predicted, thus leading to an improvement in governance; as something that allows a more hopeful and just society, economy and environment to be expressed (and achieved). In this paper, I use this context as a way of making an argument for the need to: 1) consider more explicitly the many geographies associated with governing the future; and 2) explore how these geographies might impact on the definition and promotion of spatial justice. I illustrate these arguments through an empirical discussion of the development and implementation of Wales’ Well-being of Future Generations Act, an Act that seeks to create a better and more just Wales by the year 2050. I conclude by exhorting geographers to take the lead in exploring the impact that geographical themes might have on states’ and regions’ attempts to achieve spatial justice in the present and the future.