Musa I, or Mansa Musa, was the ninth Mansa of the Mali Empire, an Islamic West African state. At the time of Musa's ascension to the throne, Mali in large part consisted of the territory of the former Ghana Empire, which Mali had conquered.
In 1324–1325, Musa performed the hajj. En route, he spent time in Cairo, where his lavish gift-giving caused a noticeable drop in the price of gold for over a decade. After completing the hajj, Musa returned to Mali, annexing the cities of Gao and Timbuktu upon his return.