Naadi astrology is an ancient Indian method of astrology to know about one’s past, present and future. It is said that thousand's of years ago, the great sages of Indian had the power to look into the past and future of the entire universe and recorded the life of each human being who either lived, were living or were to live at some point of time, these discussions were written on palm leaves in an ancient Tamil script, which can now only be described by expert naadi astrologers.

Naadi in Tamil means “in search of”. As one individual goes in search of his details in the naadi, this system came to be called by this name. The palm leaf inscriptions are scattered throughout India. Some of these palm-leaf inscriptions available in Tamilnadu were standardized, ordered and classified nearly 1000's of years ago during the period of the Cholas in South India. There are a number of naadis available named after the sapthatrishis and Siddhas who composed the same. There are only a few naadi readers who all are from the Valluvar family available, who could interrupt the inscriptions which are written in the poetic language.