The Andaman Sea is a body of water to the southeast of the Bay of Bengal, south of Myanmar (Burma), west of Thailand, north-west of Malay Peninsula, north of Sumatra and east of the Andaman Islands, India, from which it takes its name; it is part of the Indian Ocean.

The sea has been traditionally used for fishery and transportation of goods between the coastal countries and its coral reefs and islands are popular tourist destinations. The fishery and tourist infrastructure was severely damaged by the 2004 Indian Ocean earthquake and tsunami.