Rice is a major agricultural and food commodity of the Philippines, yet attaining rice self-sufficiency has eluded the country for several years. The issue of food security for the country as a whole compels the need to assess and update information in the study of rice supply and demand. This paper focuses on the trend and future status of rice supply in specific regions given its existing and changing quantity and quality of resources, technologies and emerging government policies. The assessment was done using the Rice Supply and Demand Analysis (RSDA) model. This is an integrative model that incorporates intensively the spatial dimension into the supply-demand analysis alongside socio-economic determinants of supply and demand. Potential as well as attainable yields were estimated from the model and combined with cultivated area to generate rice production. Raster GIS was applied to provide the geographical dimension for rice supply analysis. On the other hand, rice demand was estimated using the population distribution and consumption patterns of urban and rural populations in each region. By using this model, various scenarios affecting rice supply and demand are analyzed at both the regional and national level