The Association of Southeast Asian Nations (ASEAN) has emerged as a global fish producer, owing to the rapid growth of aquaculture in Southeast Asia and its large offshore fishing fleet. Fish is a regional commodity that is traded globally, and this region is at the frontline of the global trend toward meeting seafood demand by 2050. Fisheries and aquaculture are increasingly becoming a primary source of protein and micronutrients, foreign exchange, livelihoods and well-being for the population in the region. Therefore, it is imperative for ASEAN decision-makers to enhance policies nationally and regionally to maximize the synergies between socioeconomic development and protecting natural resources and the environment in the region. This paper presents a baseline (business-as-usual) projection of fish supply, net trade, consumption and nutritionin the ASEAN region to 2050.