The McMillan Memorial Library is a public library situated in Nairobi, Kenya. It is the oldest library in Nairobi and the second oldest in Kenya after the Seif bin Salim Library in Mombasa.
The library was built by the McMillan family to celebrate William Northrup McMillan, who died in 1925. Conceived by Lucie McMillan, the construction of the building was largely financed by the Carnegie Corporation of New York,
 close family friends of the McMillans. The Library was officially opened on 5 June 1931 by Sir Joseph A. Byrne, Governor of Kenya.
Macmillan Library library holds more than 400,000 books including East African newspapers and periodicals covering a wide range of topics. In addition to that, it also houses a vast collection of East African newspapers and more, which are valuable resources for anyone looking to dive deeper into the region's history, culture, and society. With such a diverse range of materials, the Macmillan Library is a valuable place to learn and earn knowledge and information for researchers, students, and scholars. Macmillan Library is an educational place .