Modi will practice physical poses and breathing control at the event on the country's main ceremonial avenue, in the capital New Delhi, on June 21, government and ruling party officials said.
The United Nations declared June 21 the first International Day of Yoga after adopting a measure proposed by the Modi government. Modi used his first speech at the UN General Assembly in September to call for such a day to be recognised.
Yoga lets people "discover the sense of oneness with yourself, the world and the nature", Modi said at the time.
Modi is an enthusiastic practitioner of yoga. He says he performs Yoga exercises every day and credits them with giving him energy so he only needs a few hours sleep each night.