Ledi Sayadaw U Ñaṇadhaja (December 1, 1846 – June 27, 1923) was a highly influential Theravada Buddhist monk. He was recognized from an early age as being highly developed in both the theory (Abhidhamma) and practice of Buddhism and was therefore revered as a scholar. He wrote many books on Dhamma in Burmese that were also accessible to serious lay followers. Hence, he was responsible for spreading Dhamma to all levels of society and reviving the traditional practice of Vipassanā meditation. Ledi Sayadaw is therefore seen as one of the forefathers of the contemporary Vipassanā movement.