Kai Londo (1845–1896) was a Kissi warrior from Sierra Leone who conquered a large territory (now Kailahun District).
Kai Londo was born in 1845 in the village of Luawa in what is now part of Kailahun District in the Eastern Province of Sierra Leone to parents from the Kissi ethnic group.
Londo hailed from a political dominant family; his father was a powerful Kissi chief in eastern Sierra Leone.
In 1875, Kai Londo joined the famous Mende warrior, Ndawa, in a series of military campaigns against Chief Benya of Small Bo.
As leader he built new roads, fortified towns, and established the new capital at Kailahun.