This report presents the activities and results of the workshop Envisioning 2050: Climate Change, Aquaculture and Fisheries in West Africa. The objectives of the workshop were to discuss critical issues and uncertainties faced by the fisheries and aquaculture sector in Ghana, Senegal and Mauritania, build sectoral scenarios for 2050 and discuss the implication of these scenarios in the context of climate change for the countries and the region. During the workshop participants were introduced to scenariobuilding methodologies, identified drivers of change and ranked them according to their importance and levels of uncertainty. Participants then constructed four consistent scenarios for 2050 for each country. The scenarios raised several questions including: Can aquaculture address both national food security and macroeconomic growth? Should regional trade be promoted or access to global markets prioritised? How will climate change affect fishery resources, especially small pelagic fish like sardines, which are an important export commodity for Senegal and Mauritania?