Environmental Governance is considered as one of the priority actions for achieving environmental sustainability. Similarly, Diplomacy deals with negotiating, consensus-building and resolving the conflicts of Issues. We are familiar with the local environmental issues and we try to reduce the adverse environmental effects. However at the international level, we do not have much knowledge on what steps have been undertaken by the international community in order to address the international effects. Several conventions, treaties, protocols and agreements have been endorsed. Our activity that destroys the nature has lots of international environmental implications. Therefore, it is essential to understand the underlying concept of the arts and sciences of environmental governance and diplomacy by an array of the actors.