Islam is one of the major religions in Nigeria, with a history that spans over a millennium. While some scholars suggest that Islam was introduced to the region as early as the 9th century,[1]it is more commonly accepted that the religion began to take root in what is now modern-day Nigeria around the 11th century. The spread of Islam was primarily facilitated by trade routes across the Sahara and the influence of Muslim merchants and scholars.[2][3][4]
By the 19th century, the Sokoto Caliphate, founded through the Fulani Jihad led by Usman dan Fodio, established Islam as the predominant religion in northern Nigeria. The religion also spread to the southwest among the Yoruba through trade and cultural exchange.[5][6][7]
Islam remains a major religion in Nigeria today, practised by approximately 47–54% of the population.[8][9][10][11][12] The variance in estimations reflects the differences in survey methodologies and the absence of an official national religious census since 1963.[13][14]
The majority of Nigerian Muslims are Sunni (95%), predominantly following the Maliki school, with a small Shia minority (5%) concentrated in areas like Sokoto.[15]Sufi orders, such as Tijaniyya and Qadiriyya, are significant, with about 37% of Muslims identifying with Sufi groups.[16]
Islam predominates in northern Nigeria, particularly among the Hausa and Fulani, and has a strong presence among the Yoruba in the southwest.Higher fertility rates in Muslim-majority northern regions contribute to a projected increase in the Muslim population share by 2060.[13][17]
Since 1999, twelve northern states in Nigeria have gradually adopted Sharia law. Initially limited to civil matters such as marriage, divorce, and inheritance, the scope of Sharia was significantly expanded in 2000 to include criminal law, beginning with Zamfara State and followed by eleven others[18][19][17]
This expansion introduced punishments such as flogging, amputations, and stoning, sparking widespread criticism from human rights groups and raising concerns about compatibility with Nigeria’s secular constitution.[20][17][21][22][23]