Kilindini Harbour is a large, natural deep-water inlet extending inland from Mombasa, Kenya. It is 25–30 fathoms (46–55 m) at its deepest center, although the controlling depth is the outer channel in the port approaches with a dredged depth of 17.5 m (57 ft). It serves as the harbour for Mombasa, with a hinterland extending to Uganda. Kilindini Harbour is the main part of the Port of Mombasa, the only international seaport in Kenya and the biggest port in east Africa. It is managed by the Kenya Ports Authority (KPA). Apart from cargo handling, Mombasa is frequented by cruise ships.

Mombasa is a coastal city in southeastern Kenya along the Indian Ocean. It was the first capital of British East Africa, before Nairobi was elevated to capital status in 1907. It now serves as the capital of Mombasa County. The town is known as "the white and blue city" in Kenya. It is the country's oldest and second-largest city after Nairobi, with a population of about 1,208,333 people according to the 2019 census. Its metropolitan region is the second-largest in the country, and has a population of 3,528,940 people.