The Guyana-Norway agreement is intended to serve as model for global Reducing Emissions from Deforestation and Forest Degradation (REDD+) initiatives. Its development raises questions of social justice and this research seeks to determine whether or not the agreement is socially just. The social justice considerations of the agreement will be identified through the application of Andrew Dobson’s theory which is used to determine the category of environmental sustainability within which the agreement is categorised and the social justice theory which applies to it. Doreen Massey’s theory of geographical responsibility is then used highlight additional social justice considerations. Finally, the academic literature on social justice and climate change is consulted to aid in the determination of the social justness of these considerations. The conclusion arrived at is that the Guyana-Norway agreement is not socially just.