Sistān o Balūchestān (Persian: استان سیستان و بلوچستان) is one of the 30 provinces of Iran. It is in the southeast of the country, bordering Pakistan and Afghanistan and its capital is Zahedan.
The province is the largest in Iran, with an area of 181,785 km² and a population of 4.1 million. The counties of the province are Iran Shahr, Chabahar, Khash, Zabol, Zahedan, Saravan, and Nik Shahr.
The region is also home to Iran's Balochi Sunni minority.
In the south, east and west of Sistān and Balūchestān, the people are mostly Balōchi and speak the Baluchi language. The name Balūchestān means "Land of the Balōchi" in Persian language. Similarly, the Persian language name Sistān comes from the Old Persian Sakastāna, meaning "Land of the Sakas".
The inhabitants of the province of Sistan Va Baluchestan continue to embrace their own norms and traditions, and the region has the potential to become one of the sight-seeing areas of Iran. The two most important tribes of the province are the Brahui and Baluch tribes. Their means of livelihood, life-style, mode of dwelling, customs, traditions, and tribal paths all form a cultural background worth seeing.
Many scholars, orators, and literary personalities have sprung up from this part of Iran, amongst which are the reputed Farrokhi Sistani, Ya'qub bin Laith as-Saffar and Rostam. Ayatollah Sistani is also from Sistān; though he currently resides in Najaf, Iraq.
In the epigraphs of Bistoon and Persepolis, Sistan is mentioned as one of the eastern territories of Darius the Great. The name Sistan, as mentioned above, is derived from Saka (also sometimes Saga, or Sagastan), one of the Aryan tribes that had taken control over this area in the year 128 BCE. During the Arsacid Dynasty (248 BC to 224 CE), the province became the seat of Suren-Pahlav Clan. From the Sassanid period till the early Islamic period, Sistan flourished considerably. During the reign of Ardashir I of Persia, Sistan came under the jurisdiction of the Sassanids, and in 644CE, the Arab Muslims gained control as the Persian empire was in its final moments of collapsing.
The famous Persian hero Ya'qub bin Laith as-Saffar, whose descendants dominated this area for many centuries, later became governor of this province. Dynasties such as the Saffarids, Samanids, Qaznavids, and Seljuqids, also ruled over this territory.
In 1508 CE, Shah Ismail I of the Safavid dynasty conquered Sistan, and during the reign of Nader Shah there was further turmoil.
The ancient name of Baluchestan was Moka and through the passage of time it changed to Mokran / Makran, which is now the southern sector of Baluchestan. This territory came to be known as Baluchestan from the time that the Baluch tribes settled here. During the reign of the second caliph of Islam, this territory was conquered by the Arabs and an Arab commander was assigned as governor. In 916 CE, Baluchestan was liberated by the Daylamids and thereafter the Seljuqids, when it became a part of Kerman.
The province today is one of the most underdeveloped, desolate, and poorest of Iran's provinces. The government of Iran has been trying to reverse this situation by implementing new plans such as creating the Chabahar Free Trade-Industrial Zone.