The term “social justice” implies there is an injustice, or unfairness, experienced among a potentially vulnerable population. A social justice lens requires acknowledgement and accountability of various disciplines, including political science, economics, sociology, legal, environmental, community accountability, health and human rights, for impartiality and equal opportunities and liberties for all members in society. Hence, the social justice argument brings to the forefront a change in historical ideologies of personal responsibility to the realities of constrained choices. This chapter describes obesity from a social justice perspective. Using John Rawls’ theories of justice, the obesity epidemic is re-articulated and provides a broader understanding on factors that impede sufficient access to critical resources, especially among the disadvantaged groups. This book goes beyond a recognition of personal attributes and endorses a more intellectual consideration of the worldwide obesity epidemic.