Ekei Essien Oku (22 January 1924 – 16 October 2004) was a Nigerian librarian, historian, and writer.
She has published her research into the history of Nigeria based on the account of missionaries who recorded dates on the formation of towns in the 17th century.
She was educated in Nigeria, including Queen's College, Lagos.
[5] Oku researched and wrote, "The Kings and Chiefs of Old Calabar (1785–1925)".
[3] Oku was profiled in 2000 by the BBC in a half-hour study of her life and work "African Perspective".