In addition to the classification of agricultural zones in the Mekong Delta of Vietnam developed by Vietnamese scientists, we propose here another classification from an economic viewpoint for the mid-1990s. Our criteria for zoning were as follows: soil fertility, agricultural land size per household, and degree of development of the non-agricultural sector. 1) High- fertility soil zone is characterized by a high paddy yield, double ～ triple cropping of paddy per year, and small-scale agricultural land area and includes some inland provinces. 2) Medium-fertility soil zone is characterized by a medium paddy yield, double cropping of paddy per year, and medium-scale agricultural land area and includes only Can Tho province. 3) Low-fertility soil zone of paddy type is characterized by a low paddy yield, mono～double cropping of paddy per year, and large-scale agricultural land area and includes some coastal provinces, which are affected by saline water intrusion. 4) Low-fertility soil zone of non-paddy type is characterized by a low paddy yield, separation from paddy-predominant land utilization, and small-scale agricultural land area and includes only Ben Tre province. 5) Long An and An Giang provinces are remarkable by the strong influence of the non-agricultural sector on agriculture due to the urbanization around Ho Chi Minh City or foreign trade across the Cambodian border.