Mahāsī Sayādaw U Sobhana (Burmese:, pronounced [məhàsì sʰəjàdɔ̀ ʔú θɔ́bəna̰]; 29 July 1904 – 14 August 1982) was a Burmese Theravada Buddhist monk and meditation master who had a significant impact on the teaching of vipassanā (insight) meditation in the West and throughout Asia.

Mahāsi Sayādaw was born in 1904 in Seikkhun village in Upper Burma. He became a novice at age twelve, and was ordained at the age of twenty with the name Sobhana. Over the course of decades of study, he passed the rigorous series of government examinations in the Theravāda Buddhist texts, gaining the newly introduced Dhammācariya (dhamma teacher) degree in 1941.

In 1931, U Sobhana took leave from teaching scriptural studies in Moulmein, South Burma, and went to nearby Thaton to practice intensive Vipassana meditation under Mingun Jetawun Sayādaw (also rendered Mingun Jetavana Sayādaw), also known as U Nārada. This teacher had practiced in the remote Sagaing Hills of Upper Burma, under the guidance of Aletawya Sayādaw, a student of the forest meditation master Thelon Sayādaw.^{[citation needed]} U Sobhāna first taught Vipassana meditation in his home village in 1938, at a monastery named for its massive drum 'Mahāsi'. He became known in the region as Mahāsi Sayādaw. In 1947, the Prime Minister of Burma, U Nu, invited Mahāsi Sayādaw to be resident teacher at a newly established meditation center in Yangon, which came to be called the Mahāsi Sāsana Yeiktha.

Mahasi Sayadaw U Sobhana 

The Venerable Mahasi Sayadaw

In his style of practice, derived from the so-called New Burmese Method of U Nārada, the meditator lives according to Buddhist morality as a prerequisite for meditation practice. Meditation itself entails the practice of satipaṭṭhāna, the four foundations of mindfulness, anchoring the attention on the sensations of the rising and falling of the abdomen during breathing, observing carefully any other sensations or thoughts. This is coupled to reflection on the Buddhist teachings on causality, gaining insight into anicca, dukkha, and anattā.

Mahāsī Sayādaw was a questioner and final editor at the Sixth Buddhist Council on May 17, 1954.