Warri is a major oil city in Delta State, Nigeria, with a population of over 300,000 people according to the national population figures for 2006. . The people of Warri are mainly the Urhobos, Itsekiris, and Ijaws, but other ethnic groups also live within the city. Warri is predominantly Christian, as is most of Southern Nigeria. The city is known nationwide for its unique Pidgin English.

Warri sits on the bank of the Niger Delta and has a modern seaport which serves as the cargo transit point between the Niger River and the Atlantic Ocean for import and export. The city's history dates back to the 15th century, when it was visited by Portuguese missionaries. Subsequently it served as the base for Portuguese and Dutch slave traders. Warri became a more important port city during the late 19th century, when it became a centre for the palm oil trade and other major items such as rubber, palm products, cocoa, groundnuts, hides, and skins.

Warri was then established as a provincial headquarters by the British in the early 20th century. There have been a tremendous growth in the population; it has grown from being a rural area to an urban area.