The state religion in Pakistan is Islam, which is practiced by about 95-98% of the 187,343,000 people of the nation.The remaining 2-5% practice Christianity, Hinduism and other religions.

Muslims are divided into two major sects: the majority of them practice Sunni Islam, while the Shias are a minority who make up an estimated 5-20%, depending on the source. Nearly all Pakistani Sunni Muslims belong to the Hanafi Islamic law school. The majority of Pakistani Shia Muslims belong to the Ithnā‘Ashariyyah Islamic law school, with significant minority groups who practice Ismailism, which is composed of Nizari (Aga Khanis), Mustaali, Dawoodi Bohra, Sulaymani, and others.
The constitution of Pakistan establishes Islam as the state religion and provides all its citizens the right to profess, practice and propagate their religion subject to law, public order, and morality. The constitution limits the political rights of Pakistan's non-Muslims, and only Muslims are allowed to become the President or the Prime Minister. Moreover, only Muslims are allowed to serve as judges in the Federal Shariat Court, which has the power to strike down any law deemed un-Islamic.
Islam is the state religion of Pakistan, and about 95-98% of Pakistanis are Muslims. The Muslims are divided into 2 sects, Sunni Islam and Shia Islam. The Shia Islam in Pakistan is practiced by 5-20% of the Muslims and the remaining larger number of Muslims practice Sunni Islam. There are a number of Islamic law schools (schools of jurisprudence), which are called fiqh or 'Maktab-e-Fikr' in Urdu. Nearly all Pakistani Sunni Muslims belong to the Hanafi Islamic school of thought while small number belong to the Hanbali school. The majority of Pakistani Shia Muslims belong to the Twelver (Ithna Asharia) branch, with significant minority who adhere to Ismailism branch that is composed of Nizari (Aga Khanis), Mustaali, Dawoodi Bohra, Sulaymani, and others.
Islam to some extent syncretized with pre-Islamic influences, resulting in a religion with some traditions distinct from those of the Arab world. Two Sufis whose shrines receive much national attention are Ali Hajweri in Lahore (ca. 11th century) and Shahbaz Qalander in Sehwan, Sindh (ca. 12th century). Sufism, a mystical Islamic tradition, has a long history and a large popular following in Pakistan. Popular Sufi culture is centered on Thursday night gatherings at shrines and annual festivals which feature Sufi music and dance. Contemporary Islamic fundamentalists criticize its popular character, which in their view, does not accurately reflect the teachings and practice of the Prophet (pbh) and his companions. There have been terrorist attacks directed at Sufi shrines and festivals, 5 in 2010 that killed 64 people.
Although members of Ahmadiyya (also known as Qadiani consider themselves to be Muslims, the government of Pakistan does not consider this group followers of Islam. The Pakistani parliament has declared Ahmadis to be non-Muslims.
Christians make up 1.6% of Pakistan's population, about 2.8 million people out of a total population. They are the second-largest religious minority community in Pakistan. The majority of the Pakistani Christian communities is constituted by converts from the low caste Hindus from Punjab region, from the British colonial era. The community is geographically spread throughout the Punjab province, whilst its presence in the rest of the provinces is mostly confined to the urban centers. There is a Roman Catholic community in Karachi which was established by Goan and Tamil migrants when Karachi's infrastructure was being developed by the British during colonial administration between World War I and World War II.
Meanwhile there are few Protestant groups conducting missions in Pakistan. The Day by Day Christian Ministries which is based in the Philippines is operating a school in Karachi, though most of its members there converted outside the country due to restrictions at home.
There are also followers of Hinduism in Pakistan. The Rig Veda, an ancient Hindu text was believed to have been composed in the Punjab region several thousand years ago and spread from there to much of South Asia slowly developing and evolving into the various forms of the faith we see today. Hindus today number around 3 million or about 1.6%. Hinduism in Pakistan is unique in that there is no rigid form of caste distinction amongst its adherents and as such, is more egalitarian in nature. According to the last census 93% of Hindus live in eastern Sindh, 5% in Punjab and nearly 2% in Balochistan.[citation needed]
The Bahá'í Faith in Pakistan begins previous to its independence when it was still under British colonial rule. The roots of the religion in the region go back to the first days of the Bábí religion in 1844, with Shaykh Sa'id Hindi who was from Multan. During Bahá'u'lláh's lifetime, as founder of the religion, he encouraged some of his followers to move to the area that is current-day Pakistan.
In 1921 the Bahá'ís of Karachi elected their first Bahá'í Local Spiritual Assembly. By 1956 Bahá'í local assemblies spread across many cities, and in 1957, East and West Pakistan elected a separate National Bahá'í Assembly from India and later East Pakistan became Bangladesh with its own national assembly. Waves of refugees arrived in 1979 due to the Soviet Union invasion of Afghanistan and the Iranian Revolution in Iran.
The Bahá'ís in Pakistan have the right to hold public meetings, establish academic centers, teach their faith, and elect their administrative councils. However, the government prohibits Bahá'ís from travelling to Israel for Bahá'í pilgrimage. Recent estimates are over 79,000 though Bahá'ís claimed less than half that number.
In the 17th century the reformist Sikh movement originated in Pakistan's Panjab region where Sikhism's founder as well as most of the faiths disciples originated from. There are a number of Sikhs living throughout Pakistan today; estimates vary, but the number is thought to be on the order of 20,000. In recent years, there numbers have increased with many Sikhs migrating from neighbooring Afghanistan who have joined their co-religionists in Pakistan. The shrine of Guru Nanak Dev is located in Nankana Sahib near the city of Lahore where many Sikhs from all over the world make pilgrimage to this and other shrines.
Zorastrianism is believed to have been a major religion in the region of Pakistan from the time it was part of the Persian Achemenid empire. Numerous Zorastrian fire temples still exist in Balochistan, Sindh and parts of Panjab. More recently, from the 15th century onwards, Zorastrians came to settle the coast of Sindh and have established thriving communities and commercial entreprises. These newer migrants where to be called Parsi. At the time of independence of Pakistan in 1947, Karachi and Lahore were home to a thriving Parsi business community. Karachi had the most prominent population of Parsis in Pakistan. After independence, many migrated abroad but a large number remained. Parsis have entered Pakistani public life as social workers, business folk, journalists and diplomats. The most prominent Parsis of Pakistan today include Ardeshir Cowasjee, Byram Dinshawji Avari, Jamsheed Marker, as well as the late Minocher Bhandara. The founding father of Pakistan, Muhammad Ali Jinnah, married Ratti Bai who belonged to a Parsi family, after her conversion to Islam.
This is pagan religion of the Kalash people living in a remote part of Chitral. Adherents of the Kalash religion number around 3,000 and inhabit three remote valleys in Chitral; Bumboret, Rumbur and Birir. Their religion is unique but shares some common ground with Greek, Macedonian Pagan, Vedic and Pre-Zoroastrian religions.
Jainism existed in Punjab, Balochistan, Khyber Pakhtunkhwa and Karachi. There is no evidence of any Jains living in Pakistan today, although it is claimed that a few still live in Sindh and Punjab provinces. They are number of disused Jain Temples found in different parts of Pakistan. Gulu Lalvani, a famous Jain, was originally from Pakistan but he, like other Jains, emigrated from Pakistan. Baba Dharam Das Tomb is also found in Pakistan. Digambar Temple is one of the famous Jain temples in Pakistan.
Buddhism has an ancient history in Pakistan, although there is no evidence that any Buddhists live in Pakistan today. The country is dotted with numerous ancient and disused Buddhist stupas along the entire breath of the Indus River that courses through the heart of the country. Many Buddhists empires and city states existed, notably in Gandhara but also elsewhere in Taxila, Punjab and Sindh. It is believed that Tantric Buddhism was developed in Pakistan's Swat valley. Pakistan and much of Afghanistan were one of the first regions to adopt Buddhism and which saw a large number of adherents to the faith. It is believed that through the Silk Road of northern Pakistan, that Buddhism spread later to Central Asia, China and beyond.
There is no evidence that there are any Jews in Pakistan today, nor has any claim been made by any practitioner of the faith in recent decades. Various estimates suggest that there were about 1,500 Jews living in Pakistan at the time of its independence on 14 August 1947, with the majority living in Karachi and a few living in Peshawar. However, almost all emigrated to Israel after 1948. There are a few disused synagogues in both cities; while one Karachi synagogue was torn down for the construction of a shopping mall. The one in Peshawar still exists, although the building is not being used for any religious purpose. There is a small Jewish community of Pakistani origin settled in Ramla, Israel.
Atheism and agnosticism
There are people who do not profess any faith (such as atheists and agnostics) in Pakistan but their numbers is not known. They are particularly in the affluent areas of the larger cities. Some were born in secular families while others in religious ones. According to the 1998 census, people who did not state their religion accounted for 0.5% of the population, but social pressures against claiming no religion was strong. A 2012 study by Gallup Pakistan found that people not adhering to any religion account for 1% of the population.
In September 2010 a Facebook group surfaced for Pakistani Atheists and Agnostics (PAA). On August 2011, they launched their website which received more than 17,000 hits in just 48 hours after its launch from 95 countries. The PAA wants a non-theist box to be added on the passport and to be easier for Pakistanis to change their religion legally if they want.