South Asia’s trade structure, trade potential, supply capacity, and global market access from 1991 to 2017 are examined through empirical research using trade indexes and gravity econometric estimation. The results broadly reflect a stagnant position of South Asia in the merchandised trade structure. South Asian economies have a comparative advantage in some sectors, which are common for them, and these became their competitive export domain. Depending on their relationship, rivalry may be beneficial. India has the highest export diversification, among other criteria, and must refocus on economic integration. The export potential exists while market access and supply capacity remain intact. As South Asia is a high-consumption economy, domestic issues should be handled tactfully and regional integration must be emphasised.