Kigeli IV Rwabugiri was the king (mwami) of the Kingdom of Rwanda in the mid-nineteenth century. He was among the last Nyiginya kings in a ruling dynasty that had traced their lineage back four centuries to Gihanga, the first 'historical' king of Rwanda whose exploits are celebrated in oral chronicles. He was a Tutsi with the birth name Sezisoni Rwabugiri. He was the first king in Rwanda's history to come into contact with Europeans. He established an army equipped with guns he obtained from Germans and prohibited most foreigners, especially Arabs, from entering his kingdom.

Rwanda, officially the Republic of Rwanda, is a landlocked country in the Great Rift Valley of Central Africa, where the African Great Lakes region and Southeast Africa converge. Located a few degrees south of the Equator, Rwanda is bordered by Uganda, Tanzania, Burundi, and the Democratic Republic of the Congo. It is highly elevated, giving it the soubriquet "land of a thousand hills", with its geography dominated by mountains in the west and savanna to the southeast, with numerous lakes throughout the country. The climate is temperate to subtropical, with two rainy seasons and two dry seasons each year. It is the most densely populated mainland African country; among countries larger than 10,000 km2, it is the fifth most densely populated country in the world. Its capital and largest city is Kigali.