The Baluchis--who constitute the majority of the population in Baluchestan va Sistan--numbered approximately 600,000 in Iran in the mid-1980s. They are part of a larger group that forms the majority of the population of Baluchistan Province in Pakistan and of some areas in southern Afghanistan. In Iran the Baluchis are concentrated in the Makran highlands, an area that stretches eastward along the Gulf of Oman coast to the Pakistan border and includes some of the most desolate country in the world. The Baluchis speak an Indo-Iranian language that is distantly related to Persian and more closely related to Pashtu, one of the major languages of Afghanistan and Pakistan. Historically, Baluchi has been only an oral language, although educated Baluchis in Pakistan have developed a written script that employs the Arabic alphabet. Unlike the majority of Persians, the majority of Baluchis are Sunni (see Glossary) rather than Shia Muslims. This religious difference has been a source of tension in the past, especially in the ethnically mixed provincial capital of Zahedan. Religious tensions have been exacerbated since the establishment of the Republic.

About half of the Baluchis are seminomadic or nomadic the remainder are settled farmers or townsmen. Tribal organization remains intact among nomadic and seminomadic Baluchis tribal patterns of authority and obligation have also been retained by the majority of settled Baluchis. The Baluchis have been one of the most difficult tribal groups for the central government to control, in large part because of poor communications between Tehran and Baluchestan va Sistan. With the exception of the city of Zahedan, neither the monarchy nor the Republic invested any significant funds in local development projects. As a result, the Baluchis are one of the poorest and least educated peoples in Iran. Most of the principal Baluchi tribes in Iran border Pakistan or Afghanistan. They include the Yarahmadzai, the Nauri, the Gomshadzai, the Saravan, the Lashari, and the Barazani. Along the coast of the Gulf of Oman live the important tribes of Sadozai and Taherza.

Data as of December 1987