Chah Subhaddo (Thai: ชา สุภัทโท, alternatively Ajahn Chah, 17 June 1918 – 16 January 1992) was an influential teacher of the Buddhadhamma and a founder of two major monasteries in the Thai Forest Tradition. Respected and loved in his own country as a man of great wisdom, he was also instrumental in establishing Theravada Buddhism in the West.

source: wikipedia