Thailand ( or ; , ), officially the
Kingdom of Thailand (, ; ), formerly known as
Siam (; ), is a country at the centre of the Indochinese peninsula in
Mainland Southeast Asia. It is bordered to the north by
Myanmar and
Laos, to the east by Laos and
Cambodia, to the south by the
Gulf of Thailand and
Malaysia, and to the west by the
Andaman Sea and the southern extremity of Myanmar. Its maritime boundaries include
Vietnam in the Gulf of Thailand to the southeast, and
Indonesia and
India on the Andaman Sea to the southwest.
