The 4th World Small-Scale Fisheries Congress (4WSFC) is a transdisciplinary forum for anyone interested in small-scale fisheries to participate in an interactive discussion about the world’s small-scale fisheries. The purpose of the congress is to facilitate knowledge exchange, foster collaboration, and mobilize support for the viability and sustainability of small-scale fisheries. Considering the Covid-19 global pandemic, and recognizing the need to strengthen regional networks and organizations, the 4WSFC will take place in five regions of the world, with the next one in Merida, Mexico.