Indonesia, as one of the largest archipelagic countries in the world, has great potential in maritime energy management. The maritime sector plays an important role in the national economy, but it also becomes a significant source of emissions. Therefore, Indonesia needs to address these issues through regulation. The regulation of maritime energy management and emissions reduction in Indonesia are based on the international regulations such as the Paris Agreement and the United Nations Framework Convention on Climate Change (UNFCCC). This chapter discussed the regulatory landscape governing maritime energy management and emissions reduction in Indonesia including international conventions, regional regulations, policy initiatives driving industry compliance and innovation and the implementation of these regulations with the real condition in Indonesia maritime sector. These regulations are formulated to achieve net zero emissions for global environment.