Fertilizer production is becoming an intensive industry in Vietnam, meaning that greenhouse gases (GHG) emission of the sector will increase and contribute a significant proportion to a national GHG emission total. Among domestic fertilizer types, nitrogenous fertilizer and DAP are most outputintensive production as well as CO2-intensive emissions. This paper determines total GHG amount as well as reference emission levels of fertilizer production in Vietnam. The study focuses on two intensive energy products, those are urea (related to the NH3 production) and DAP (related to the H3PO4 production). The results can be directly used for national GHGs inventory mission and indirectly referred for developing strategic that objectives to mitigate the impacts of climate change and towards a low carbon economy in service of sustainable development.