Undan Island Lighthouse, Maritime navigation structure on Undan Island, Malaysia

Undan Island Lighthouse is an octagonal tower made of masonry that rises approximately 15 meters above the island and features a lantern at its top. A modern concrete communications tower now stands beside it, noticeably taller than the original structure.

The lighthouse was constructed between 1879 and 1880 by the British company Chance Brothers and Company to guide ships through the Strait of Malacca. This structure reflects the technical advances of the Victorian era and how they were applied in distant colonial regions.

The islet is uninhabited and cannot be reached by land; lighthouse staff travel there by speedboat. The Malay name is Rumah Api Pulau Undan. The original light has operated since 1880, and in 2008 a concrete tower with advanced navigation instruments was added beside it.

Undan Island is uninhabited and has no public boat service, so the lighthouse cannot be visited; the keepers reach it only by speedboat from mainland Malacca, 25 km away. The structures stand on the islet's summit, and the crossing is open water with no shelter along the way.

The modern concrete tower next to the historic lighthouse is three times taller and shows how technology on the island has changed dramatically. These two structures standing side by side tell the story of more than a hundred years of progress in navigation technology.