Boir Aḥmad is the territory of the largest tribe (or confederation of tribes) of Kohkīlūyah in South Iran, located roughly south of the Bakhtīyārī and west of the Qashqā'ī. Its population (75,000 in 1966) subsists on a mixed economy of agriculture and animal husbandry, which in the highly segmented mountainous topography necessitates a variety of nomadic and transhumant adaptations.
The political position within the wider Iranian context of the area presently called Boir Aḥmad has had a variegated history. Under the rule of the Atābegs of Lur-i Buzurg (12th-14th cent.) it was fairly well integrated and administered, with a flourishing economy and a largely sedentery population. In the following centuries, less stable "anarchic" forms of political organization seem to have prevailed, until the Qājār rulers tied the area to the center by appointing the local khāns as tax collectors and through interfering in their power struggles.