The Fulani War of 1804–1808, also known as the Fulani Jihad or Jihad of Usman dan Fodio, was a military conflict in present-day Nigeria and Cameroon. The war began when Usman Dan Fodiyo, a prominent Islamic scholar and teacher, was exiled from Gobir by King Yunfa, one of his former students.

Usman Dan Fodiyo assembled an Islamic army to lead a jihad against the Hausa Kingdoms of north Nigeria. The forces of Usman Danfodiyo slowly took over more and more of the Hausa kingdoms, capturing Gobir in 1808 and executing Yunfa. The war resulted in the creation of the Sokoto Caliphate, headed by Usman Danfodiyo, which became one of the largest states in Africa in the 19th century. His success inspired similar jihads in Western Africa.