Sundarban is the largest productive contiguous mangrove forest in the world, located in the south-western part of Bangladesh. UNESCO declared three wildlife Sanctuaries of the Sundarban as 522nd World Heritage Site in 1997. The unique and a house of diverse biodiversity of the Sundarban is not just a good to be conserved for its intrinsic value, but has a critical role in ecosystem processes that provide essential services to the country and the community living nearby. Species level traits were found to benefit a number of ecosystem services, with species abundance being particularly important for pest regulation, pollination and recreation, and species richness for timber production and freshwater fishing. It is also the hub of natural resources and beauties with several types of tourist destination which may be used as a potential tool for sustainable ecotourism promotion in future aiming one hand to protect the natural environment and cultural diversity, and on the other hand, generating a source of revenue for the local people without harming the nature. A new paradigm of management should look forward to considering climate change, ecological integrity, sustainable harvesting and ensuring continuity of the ecosystem services of the Sundarban. This paper, therefore, attempts to examine ecosystem services of the selected sites of the Sundarban in context of exploring their sustainable uses for both enhancing livelihood and promoting ecotourism.