Lamu Island is a part of the Lamu Archipelago of Kenya.

The island is linked by boat to Mokowe on the mainland and to Manda Island, where there is an airport. There are no roads on the island, just alleyways and footpaths, and therefore, there are few motorized vehicles on the island. Residents move about on foot or by boat, and donkeys are used to transport goods and materials.

A port was founded on the island of Lamu by Arab traders at least as early as the fourteenth century, when the Pwani Mosque was built. The island prospered on the slave trade. After defeating Pate Island in the nineteenth century, the island became a local power, but it declined after the British forced the closure of the slave markets in 1873. In 1890 the island became part of Zanzibar and remained obscure until Kenya was granted independence from Great Britain in 1963. Tourism developed from the 1970s, mainly around the eighteenth century Swahili architecture and traditional culture.