Green Acre Baháʼí School is a conference facility in Eliot, Maine, in the United States, and is one of three leading institutions owned by the National Spiritual Assembly of the Baháʼís of the United States. The name of the site has had various versions of "Green Acre" since before its founding in 1894 by Sarah Jane Farmer.

Eliot is a town in York County, Maine, United States. Originally settled in 1623, it was formerly a part of Kittery, to its east. After Kittery, it is the next most southern town in the state of Maine, lying on the Piscataqua River across from Portsmouth and Newington, New Hampshire. The population was 6,717 at the 2020 census. It is part of the Portland–South Portland–Biddeford, Maine metropolitan statistical area.