Sustainable tourism is nothing but a kind of tourism practices which is closely related to Social, Economic and Environmental factors of an economy. To achieve sustainable development of the nation, sustainable tourism can contribute towards attainment of 17 Sustainable Development Goals (SDGs), highlighted in global 2030 Agenda for Sustainable Development at United nations. This study focuses on to know about the concept of Sustainable Tourism and its role in achieving SDGs for the sustainable development of an Indian economy. The study also shows the performance or contribution of Tourism in G20 Countries towards achieving the Sustainable Development Goals. This study is descriptive and analytical in nature and based on secondary data collected through various published sources and from several official websites. The study concludes that each and every goal out of 17 SDGs Goals is related with Tourism directly or indirectly, illustrated through Sustainable Tourism Cycle (STC). There is need of empowering and strengthening of all SDGs globally. Also, whenever the nations will try to achieve the achieve the objectives of sustainable tourism i.e., fulfillment of basic requirements, facilities or infrastructure at particular tourists’ destination, the nation will automatically achieve the Sustainable Development Goals (SDGs) and their targets. Hence, this will lead to the sustainable development of the each and every nation and will also contribute globally to achieve these Goals.