Ko Lanta (Thai: เกาะลันตา, pronounced [kɔ̀ʔ lān.tāː]) is a district (amphoe) in Krabi province, Thailand.

[citation needed] The district, approximately 70 km from Krabi town, consists of three major islands.

The largest island (Ko Lanta Yai) has nine beaches running down the entire west coast, forests, and tropical jungle.

The geography of the island is typically mangroves, coral rimmed beaches, and tree-covered hills.

Krabi Airport, the most popular one for travel to Ko Lanta, is approximately 10 km from the provincial town and operates international flights to several foreign destinations.

On Ko Lanta Noi there is just one main road in the east and a smaller one that links to the ferry pier.

Krabi and Ko Lanta incorporate a mix of Buddhists, Thai-Chinese, Muslims, and sea gypsies.

Chao-le (sea gypsies) inhabit Ko Lanta and follow a lifestyle that has been relatively unaffected by the islands' tourism.