West Pakistan was the western province of Pakistan between 1955 and 1970, covering the territory of present-day Pakistan. Its land borders were with Afghanistan, India and Iran, with a maritime border with Oman in the Gulf of Oman in the Arabian Sea.
Following its independence from British rule, the new Dominion of Pakistan was physically separated into two exclaves, with the western and eastern wings geographically separated from each other by India. The western wing of Pakistan comprised three governor's provinces (the North-West Frontier, West Punjab and Sind), one chief commissioner's province (Baluchistan) along with the Baluchistan States Union, several independent princely states (notably Bahawalpur, Chitral, Dir, Hunza, Khairpur and Swat), the Karachi Federal Capital Territory, and the autonomous tribal areas adjoining the North-West Frontier Province. The eastern wing of the new country—known as East Pakistan—comprised the single province of East Bengal (which included the former Assamese district of Sylhet and the Chittagong Hill Tracts).