Kaniyan Poongundranar, also known by the name Kaniyan Poongunranar and Kaniyan Pungundranar, was a Tamil author and philosopher from the sixth century BCE. His name implies that he was an astronomer. He was born in Mahibalanpatti, Sivaganga district, Tamil Nadu, India. He composed two poems Natrinai, and Puṟanāṉūṟu. The poem Natrinai had 226 verses while Purananuru had 192 verses. It had various themes. One, Cosmopolitanism, where he rejected the division of mankind into several categories and emphasized the universality of all human beings. Two, Natural law, where he stated that the wooden log is carried by the water in its direction and postulated that everything in life will follow karma.
He called the same Way of Order. Through this, he suggested that all humans are equal and bound by the same moral and legal code, humans are liable for both the suffering and pleasure they feel and death is inevitable and a natural part of life. He was highly influential in the Self-respect movement. He suggested the sentence ‘Yaadhum Oore Yaavarum Kelir’ which was adopted as the motto of the World Thamizh Confederation to represent the Tamil people.