In order to extend research on children's Theory of Mind (ToM) within moral development, researchers have proposed a novel area of research, Morally Relevant ToM. It has been argued to better account for the moral and social considerations that children are required to make when using their ToM abilities in real life situations. To further the research in this area, the Social Domain Theory can be used to provide a theoretical framework and new insight into children's developing Morally Relevant ToM. The current paper reviews the existing literature on Morally Relevant ToM, and applies the Social Domain Theory to this literature in order to conceptualize current findings. Finally, the current paper presents how the Social Domain Theory can be used to extend the current research through future studies. Considering this new and innovative research within a Social Domain framework will expand upon our understanding of Theory of Mind development.