Many Farms (Navajo: Dáʼákʼeh Halání) is a census-designated place (CDP) in Apache County, Arizona, United States.

[5] From 1952 to 1962, the Many Farms community was the location of two major medical experiments led by Walsh McDermott.

The goal of the first experiment was to test the efficacy of the drug isoniazid as a treatment for tuberculosis (TB), which was then widespread and largely fatal among the Navajo despite the availability of TB medication elsewhere in the country.

McDermott chose the reservation because he needed a population that had not been previously exposed to streptomycin, then the most advanced treatment for TB.

While McDermott's initial TB experiment was a success, his second experiment, in which he attempted a more broad-based healthcare intervention, failed to meaningfully reduce disease morbidity and mortality among the Navajo due to conflicts with the Indian Health Service, as well as the experiment's inability to address poverty, which was the underlying cause of most disease.

24.9% of all households were made up of individuals, and 2.5% had someone living alone who was 65 years of age or older.

In addition, the Bureau of Indian Education (BIE), formerly the U.S. Bureau of Indian Affairs's Office of Education Programs, operates the Many Farms High School (MFHS) in Many Farms.

By 1986 there were structural problems with these classroom buildings and administrators feared they would be unable to be repaired.