Growing crops has always hinged on the availability of land. The classification of land suitability entails the appraisal and grouping of a particular geographical area based on its suitability for a specified purpose. Land appropriateness is the degree to which a piece of land is suitable for a particular use. In this study, a multi-criteria evaluation method was employed to identify and delineate the area in San Mateo, Isabela that is most conducive to the growth of the mung bean plant. Using GIS technology to develop a spatial model for evaluating land suitability for mungbean production and to generate a suitability map by classifying agricultural land in the research region into multiple suitability classes according to a set of criteria and limitations. It is vital to analyze land's appropriateness for specific agricultural output in order to avoid environmental damage. The optimal constraint approach was utilized to determine the soil qualities, agroclimatic conditions, and topography that influence the production of mungbean products. After harvesting rice, farmers in San Mateo, Isabela, known as the "Munggo Capital of the Philippines" plant mungbeans