Green Acre is a conference facility in Eliot, Maine, in the United States. It was founded by Sarah Farmer in 1894. The name Green Acre came from poet John Greenleaf Whittier, a personal friend of the Farmer family.
Sarah Farmer met with participants in the Parliament of the World's Religions in Chicago in 1893 and in 1894, and then made Green Acre a platform for the comparative study of religions.
After Sarah Farmer became a Bahá'í in 1900, many Bahá'í speakers were invited, including Mírzá Abu'l-Fadl in 1903, `Abdu'l-Bahá in 1912 and Jináb-i-Fadil-i-Mazindarani in 1920 and 1923. In the 1913 Green Acre came into Bahá'í hands, and in 1929 it was converted into a summer school facility. It is now one of several permanent, year-round Bahá'í schools in the US.
Green Acre has been home to the annual Badasht Academy since the summer of 1999. A week-long intensive study of Baha'i history, Badasht Academy is a four year program for high school aged students, most of whom reside in the northeastern United States.