The Baluchistan States Union existed between 3rd October 1952 and 14th October 1955 in southwest Pakistan. It was formed by the states of Kalat, Kharan, Las Bela and Makran with the capital at the town of Kalat. The area of the Union was roughly the western half of the modern province of Balochistan. The Union was separate from the Chief Commissioners Province of Baluchistan which comprised areas to the northeast of the Union. The Union did not include the enclave of Gwadar which was part of the Sultanate of Oman. The four state rulers continued in office but some matters became the responsibility of the Council of Rulers.
The area became the Kalat Division.