The administrative units of Pakistan contains four provinces, two administrative territories of the Kashmir region and a capital territory. The provinces and administrative territories are subdivided into 37 divisions. These divisions are further subdivided into districts, tehsils, and finally union councils. The divisions were abolished in 2000, but restored in 2008.

These divisions do not include the Islamabad Capital Territory. The formerly Federally Administered Tribal Areas, which were counted at the same level as provinces, have been subsumed into the Khyber Pakhtunkhwa province and allocated to neighbouring divisions therein in 2018.

Administrative divisions had formed an integral tier of government from colonial times. The Governor's provinces of British India were subdivided into divisions, which were themselves subdivided into districts. At independence in 1947, the new nation of Pakistan comprised two wings – eastern and western, separated by India. Three of the provinces of Pakistan were subdivided into ten administrative divisions. The single province in the eastern wing, East Bengal, had four divisions – Chittagong, Dacca, Khulna and Rajshahi. The province of West Punjab had four divisions – Lahore, Multan, Rawalpindi and Sargodha. The North-West Frontier Province (as it was then called) had two divisions – Dera Ismail Khan and Peshawar. Most of the former Sind Province became Hyderabad Division. Most of the divisions were named after the divisional capitals, with some exceptions.

From 1955 to 1970, the One Unit policy meant that there were only two provinces – East and West Pakistan. East Pakistan had the same divisions as East Bengal had previously, but West Pakistan gradually gained seven new divisions to add to the original six. The Baluchistan States Union became Kalat Division, while the former Baluchistan Chief Commissioner's Province became Quetta Division. Princely State of Khairpur and with some parts of Hyderabad division were joining to form Khairpur Division. The former princely state of Bahawalpur became Bahawalpur Division, therefore joining West Punjab. The Federal Capital Territory was absorbed into West Pakistan in 1959 and in 1960 merged with the district of Las Bela to form the Karachi-Bela Division. In 1969, the princely states of Chitral, Dir and Swat were incorporated into West Pakistan as the division of Malakand with Saidu as the divisional headquarters. In 1975, Khairpur division abolished and replace it with Sukkur Division. In 1980, Sukkur division(Formally Khairpur division) was bifurcated to create Larkana division. In 1990, Mirpurkhas division created by bifurcation of Hyderabad division.

When West Pakistan was dissolved, the divisions were regrouped into four new provinces. Gradually over the late 1970s, new divisions were formed; Hazara and Kohat divisions were split from Peshawar Division; Gujranwala Division was formed from parts of Lahore and Rawalpindi divisions; Dera Ghazi Khan Division was split from Multan Division; Faisalabad Division was split from Sargodha Division; Sibi Division was formed from parts of Kalat and Quetta divisions; Lasbela District was transferred from Karachi Division to Kalat Division; Makran Division split from Kalat Division. The name of Khairpur Division was changed to Sukkur Division and Headquarters of Khairpur Division shifted from khairpur to Sukkur. Shaheed Benazirabad is also a new division in Sindh.

During the military rule of General Zia-ul-Haq, the Advisory Council of Islamize Ideology (headed by Justice Tanzilur Rahman) was tasked with finding ways to Islamic the country. One of its recommendations was that the existing four provinces should be dissolved and the twenty administrative divisions should become new provinces in a federal structure with greater devolution of power, but this proposal was never implemented.

In the recent past (i.e. in last three decades), Naseerabad Division was split from Sibi Division; Zhob Division was split from Quetta Division; Bannu Division was split from Dera Ismail Khan Division; Mardan Division was split from Peshawar Division; Larkana Division were split from Sukkur Division and Shaheed Benazirabad Division Mirpur Khas Division was split from Hyderabad Division. Sahiwal Division was formed from parts of Lahore and Multan Divisions while Sheikhupura Division was formed from Lahore and Faisalabad Divisions. The capital of Kalat Division was moved from Kalat to Khuzdar. Rakhshan Division is recently added to Balochistan comprising parts of Quetta and Kalat Divisions with capital at Kharan.

Recently in June 2021, Loralai Division was added to Balochistan, by splitting off from Zhob Division.