The demand for energy remains a cornerstone of modern civilization, with the oil and gas industry critically meeting the global population’s daily requirements. As energy continues to drive economic growth, propel climate change mitigation, and underpin sustainable development, its management requires astute legal frameworks. This research delves into the legal structures of Nigeria and Bangladesh’s oil and gas sectors, aiming to discern their alignment and contributions towards achieving Sustainable Development Goal (SDG) 7. Adopting a library-based doctrinal legal research approach, this paper intertwines conceptual legal insights with comparative analysis. Our findings underscore that, while both Bangladesh and Nigeria have undertaken commendable strides towards SDG 7, the current pace and scope remain inadequate for realizing holistic energy sustainability. It becomes imperative, therefore, for their regulatory landscapes to evolve, integrating policy reforms resonant with the SDGs. This paper emphasizes the indispensable role of robust legislative frameworks in nurturing and fortifying a nation’s sustainable energy infrastructure.