The Baluchistan States Union or Balochistan States Union (BSU) was an administrative division of Pakistan that existed between 3 October 1952 and 14 October 1955 in the southwestern part of West Pakistan.

[1] The area of the Union was roughly the south-western half of the modern province of Balochistan.

[2] The BSU was formed after the accession of four individual princely states to the new Dominion of Pakistan in 1948.

The main governing body was the Council of Rulers which comprised the Khan-e-Azam Khan of Kalat, the Jam of Lasbela and the Nawabs of Kharan and Makran.

Decisions on major issues could be taken by a jirga or council of all the nobles or sardars of the Union.