Abstract: The aim of this study is to find factors for successful eco-tourism development. Tourism is the world’s largest industry that promotes increased interaction of political and economic forces within a society. It may be regarded as consisting of tourists, a business, and an environment or community in which it operates thereby tourism phenomenon affects all these elements. This paper deals with the study of various stakeholders in tourism development. As suggested by various authors’, management people, locals, tourism trade people and NGO’s are main stakeholders in tourism. All the information presented in this paper, if not otherwise cited is based on observations and discussions with the personnel of the NGO’s, locals and the tourists. To strengthen the theoretical ideas, three case-destinations in Indian Himalayas, Himachal Pradesh, were selected. Viz. Sangla Valley in district Kinnaur, Pongdam wetland in Kangra district and Ananda Project in Kullu District. The Sangla Valley is situated in Himachal Pradesh, an Indian state in northwest Himalayas. Foreign tourist started visiting this valley in 1995. Since then, the number of tourists has considerably increased. This has resulted in development of many accommodation units. It is obvious that the valley holds an enormous tourism potential for domestic as well as foreign tourist. Because of the growing popularity among tourists and the interest of inhabitants to use the tourist potential of this valley, the region will face a considerable boom in tourism in the next few years that may become a challenge for tourism development in a sustainable manner. A group of villagers decided to form a Non-Governmental Organization (NGO) named as “Sangla Valley Sustainable Development Society” mainly for the cause of sustainable tourism development in the valley. The second case study is a story of tradition, awareness, science, community participation, non governmental organizations, receptive administration and individual initiative combining to boost development, promote eco-tourism and conserve environment in a small village of Himalayas in the Indian state of Himachal Pradesh. Mr. Satinder Singh Guleria, who has set up the Institute for Environment Studies and the Science Awareness Trust, along with other dedicated people, who realized that action is better than just complaining, and all this in a place which most people, even in India, may not be able to identify on the map. Mr. Guleria’s area of work is in Sanauran village in Kangra district of HP, where the Pong Dam and the Ramsar Wetland expanse have received the attention of the organization. Third case study is of Ananda Project in Kullu Valley of Himachal Pradesh. The purpose of the project is to “help local communities regain their self-reliance and return to a sustainable way of life” and the main focus is to “introduce cultivation techniques at the community level in order to help the villagers generate a sustainable source of income and to conserve endangered species of medicinal plants being over harvested from the wild”. It can be concluded from the study that for successful eco-tourism development several stakeholders can play a vital role and most important is the role of community.