Nana Olomu (also spelled Olumu) (1852–1916) was an Itsekiri chief and palm oil merchant from the Niger Delta region of southern Nigeria.

[2] In 1884, Nana Olomu, the fourth Governor of Benin River, signed a treaty on behalf of the Itsekiri, granting the British further rights in Itsekiriland.

The relations between the two were peaceful until the Berlin Conference of 1884-85 and the ensuing Scramble for Africa, which led the British to try to bypass the Itsekiri middlemen so as to trade directly with the Urhobo people.

[1] A further complication was that because of technical improvements in shipping, European traders could travel further into the interior than previously, ending their former reliance on the coastal chieftains as middlemen.

[4][5] In the United Kingdom in 1899, the Aborigines' Protection Society complained to the Foreign Office about "the arbitrary treatment" to which the chief had been subjected, the government's failure to carry out "the searching investigation of his case which he had always sought", and appealed for him to be given liberty to conduct his commercial affairs freely even if, for political reasons, he could not be restored to his old position.