Subject and purpose of work: This study examines how trade openness and foreign direct investment affect Nigeria's environmental sustainability.In other words, whether, the “Pollution Haven” and “Porter” hypotheses hold for Nigeria. Materials and methods: The variables of interest are total greenhouse gas emissions, foreign direct investment (FDI), trade openness, access to electricity, access to clean fuels and technology, and urban population. The Dynamic Ordinary Least Squares (DOLS) estimation technique was deployed in this study. Results: The study's findings indicate that foreign direct investment (FDI) has a statistically significant negative long-run effect on Nigeria’s overall greenhouse gas (GHG) emissions. This robust result, with a coefficient of -0.10478 and a probability of 0.0012, lends strong support to the Porter Hypothesis. Conclusions: As a result, the report suggests that the Nigerian government supports the creation of compressed natural gas (CNG) stations and the switch to CNG-powered vehicles. The Nigerian government can also promote investment in the green energy industry by offering tax holidays