Sikhism is a minority religion in Pakistan with a population of around 16,000 Sikhs, accounting for 0.01% of the national population. Although Sikhs form a small community in Pakistan today, Sikhism has an extensive heritage and history in the country. Sikhism originated from what is now Punjab, Pakistan in the 15th century. By the 18th and 19th centuries, the Sikh community had become a major political power in Punjab, with Sikh leader maharaja Ranjit Singh founding the Sikh Empire which had its capital in Lahore, today the second-largest city in Pakistan. Nankana Sahib, the birthplace of Guru Nanak, the founder of Sikhism, is located in Pakistani Punjab; moreover, Kartarpur Sahib, the place where Guru Nanak died and was subsequently buried, is also located in the same province.
According to the 1941 census, the Sikh population comprised roughly 1.67 million persons or 6.1 percent of the total population in the region that would ultimately become Pakistan, notably concentrated in West Punjab, within the contemporary province of Punjab, Pakistan, where the Sikh population stood at roughly 1.52 million persons or 8.8 percent of the total population. By 1947, it is estimated that the Sikh population had increased to over 2 million persons in the region which became Pakistan with significant populations existing in the largest cities in the Punjab such as Lahore, Rawalpindi and Faisalabad (then Lyallpur). With communal violence and religious cleansing accompanying the Partition of British India at the time, the vast majority departed the region en masse, primarily migrating eastward to the region of Punjab that would fall on the eastern side of the Radcliffe Line and Delhi, with corresponding mass migration of Muslims into Pakistan from India.