Wat Pah Nanachat is a Theravāda Buddhist monastery in northeast Thailand, about 15 kilometres from the city of Ubon Rachathani. It was established in 1975 by Ajahn Chah as a training community for non-Thais according to the norms of the Thai Forest Tradition. Resident monks, novices and postulants include a wide range of nationalities. The primary language of communication and instruction is English.

Ubon Ratchathani is one of the four major cities of Isan, also known as the "big four of Isan." The city is on the Mun River in the southeast of the Isan region of Thailand, and is located 615 km (382 mi) away from Bangkok. It is known as Ubon (อุบลฯ) for short. The name means "royal lotus city". Ubon is the administrative center of Ubon Ratchathani Province.