Guru Poornima is an auspicious festival of India. This festival is celebrated by Hindus and Buddhists all over India. Guru Poornima is also known as ‘Vyas Purnima’ for the Hindus as they pay tribute to the greatest sage of Hindu tradition ‘Vyas’ as well as to their spiritual gurus. On this auspicious day, Buddhists pay homage to Lord Buddha. According to the Hindu calender, the festival is celebrated on the full moon day of the Ashad month. The article assigned in this chapter give a vivid view about the festival of Guru Poornima.