The Emin Pasha Relief Expedition of 1887 to 1889 was one of the last major European expeditions into the interior of Africa in the nineteenth century. Led by Henry Morton Stanley, its goal was ostensibly the relief of Emin Pasha, the besieged Egyptian governor of Equatoria (part of modern-day South Sudan), who was threatened by Mahdist forces.

Stanley set out to traverse the continent with a force of nearly 700 men, navigating up the Congo River and then through the Ituri rainforest to reach East Africa. The arduous journey caused Stanley to split the expedition into two columns; the advance column eventually reached Emin Pasha in July 1888. A series of mutinies, disagreements, and miscommunications forced Stanley and Emin to withdraw from Equatoria in early 1889