Amistad is a small unincorporated community in Union County, New Mexico, U.S. It is located about 39 miles south of Clayton on New Mexico State Highway 402. Amistad was a stop for cattle drives during the late 19th century. In 1906, Henry S. Wannamaker, a Congregational minister, promoted homesteading by placing ads in church newspapers. This led to more than 40 older ministers staking claims in Amistad.