Tiger reserves are the place where tigers are being preserved and a natural habitat is being provided to them to maintain the balance of ecosystem. Tiger reserves are also responsible to maintain and increase the number of tigers in India under the Project Tiger launched by the Govt. of India under prime supervision of National Tiger Conservation Authority (NTCA). India has largest number of tigers in the world, Approximately 70% tigers of the world live in India. That also reflects in the numbers of tiger reserves in the country, there are more than 50 tiger reserves in India. We have listed all important tiger reserves in India state-wise list with establishment year/period and size of them.