Zanjan province in the context of "Soltaniyeh"

37°36′N 47°00′E / 37.6°N 47.0°E / 37.6; 47.0Azerbaijan or Azarbaijan (Persian/Azerbaijani: آذربایجان, romanized: Āzarbāyjān, Persian pronunciation: [ɒːzæɾbɒːjˈdʒɒːn], Azerbaijani pronunciation: [ɑːzæɾbɑjˈdʒɑn]), also known as Iranian Azerbaijan, is a historical region in northwestern Iran that borders Iraq and Turkey to the west and Armenia, Azerbaijan, and the Azerbaijani exclave of the Nakhchivan Autonomous Republic to the north.

Iranian Azerbaijan includes three northwestern Iranian provinces: West Azerbaijan, East Azerbaijan and Ardabil. Some authors also include Zanjan in this list, some in a geographical sense, others only culturally (due to the predominance of the Azeri Turkic population there). The region is mostly populated by Azerbaijanis, with minority populations of Kurds, Armenians, Tats, Talysh, Assyrians and Persians.

Ardabil province (Persian: استان اردبیل) is one of the 31 provinces of Iran. Its capital is the city of Ardabil. The province is in the northwest of the country, in Region 3, bordering the Republic of Azerbaijan, and the Iranian provinces of East Azerbaijan, Zanjan, and Gilan. Spanning an area of 18,011 km, and established in 1993, Ardabil was carved out of the eastern part of East Azerbaijan province.

Gilan Province (Persian: استان گیلان) is one of the 31 provinces of Iran, in the northwest of the country and southwest of the Caspian Sea. Its capital is the city of Rasht. The province lies along the Caspian Sea, in Iran's Region 3, west of the province of Mazandaran, east of the province of Ardabil, and north of the provinces of Zanjan and Qazvin. It borders Azerbaijan (Astara District) in the north.

The northern section of the province is part of the territory of South (Iranian) Talysh. At the center of the province is Rasht. Other cities include Astaneh-ye Ashrafiyeh, Astara, Fuman, Hashtpar, Lahijan, Langarud, Masuleh, Manjil, Rudbar, Rudsar, Shaft, Siahkal, and Sowme'eh Sara. The main port is Bandar-e Anzali, formerly known as Bandar-e Pahlavi.

West Azerbaijan province (Persian: استان آذربایجان غربی) is one of the 31 provinces of Iran, whose capital and largest city is Urmia.

It is in the northwest of the country, bordered by Turkey (Ağrı, Hakkâri, Iğdır and Van Provinces), Iraq (Erbil and Sulaymaniyah Governorates) and Azerbaijan's Nakhchivan Autonomous Republic, as well as the Iranian provinces of East Azerbaijan, Zanjan, and Kurdistan. West Azerbaijan province is part of Region 3. It is separated from Armenia by Turkey's short border with the Azerbaijan Republic. The province covers an area of 39,487 km, or 43,660 km including Lake Urmia.

Kurdistan province (Persian: استان کردستان) is one of 31 provinces of Iran. The province is 28,817 km (11,126 sq mi) in area and its capital is the city of Sanandaj.

Kurdistan province is located in the west of Iran, in Region 3. It borders the Kurdistan region of Iraq to the west, and the Iranian provinces of West Azerbaijan to the north, Zanjan to the northeast, Hamadan to the east, and Kermanshah to the south.

East Azerbaijan Province (Persian: استان آذربایجان شرقی) is one of the 31 provinces of Iran. Its capital is the city of Tabriz.

The province borders Armenia, the Republic of Azerbaijan, Ardabil province, West Azerbaijan province, and Zanjan province. East Azerbaijan is in Region 3 of Iran, with its secretariat located in Tabriz.

Qazvin province (Persian: استان قزوین; IPA: [ɢæzˈviːn] ) is one of the 31 provinces of Iran. It is in the northwest of the country, with the city of Qazvin as its capital.

The province was carved out of Tehran and Zanjan provinces in 1997. The province was made a part of Region 1 upon the division of the provinces into 5 regions solely for coordination and development purposes on June 22, 2014.