Kohgiluyeh and Boyer-Ahmad Province (Persian: استان کهگیلویه و بویراحمد)^{[lower-alpha 1]} is one of the 31 provinces of Iran. It is in the southwest of the country, in Iran's Region 2.^[4] Its capital is the city of Yasuj.^[5] The province covers an area of 15,563 square kilometers.

At the time of the 2006 National Census, the province had a population of 621,428 in 125,779 households.^[6] According to the National Population and Housing Census, the population of Kohgiluyeh and Boyer-Ahmad Province in 2011 was 658,629 in 156,176 households.^[7] At the latest census in 2016, the population had risen to 713,052 inhabitants in 186,320 households.^[2] The people mainly speak the Luri language.

Kohgiluyeh and Boyer-Ahmad province is located in the south of Iran, and shares borders with five provinces: Isfahan and Fars provinces to the east, Bushehr province to the south, Khuzestan to the west and Chaharmahal and Bakhtiari to the north.

The province is mostly mountainous in terrain, part of the Zagros range. The highest point is the Dena summit with a height of 5,109 metres. The mountain range of Dena, which reaches an elevation of 4,000 metres, is located in the province, and is covered with oak forests. Another mountain is Khamin or Khami, which is located in Gachsaran County.^{[citation needed]}

The population history and structural changes of Kohgiluyeh and Boyer-Ahmad Province's administrative divisions over three consecutive censuses are shown in the following table.

• University of Yasuj
• Islamic Azad University of Gachsaran
• Yasuj University of Medical Sciences

• Seyyed Nasir Hosseini (the representative of Guardianship of the Islamic Jurist, in the province)

Media related to Kohgiluyeh and Boyer-Ahmad Province at Wikimedia Commons

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