Thailand's name comes from the Thai people and is one of the main ethnic groups in Thailand. In Thai, the Thai people are called "Thailand", so this country is also called "prathet Thailand", which means "the country of free Thai people". In English, "Thailand" also refers to the Thai people, so this country is translated into "Thailand", which means "the land of the Thai people".

The origin of the name of Thailand can be traced back to the beginning of13rd century, when the Thai people settled in the Chao Phraya River valley and established the Sumulai Dynasty. This area is called "Siam", which means "land of gold".

1767, Burmese troops invaded Siam and plundered it. Since then, Thailand has re-established its own dynasty and designated Bangkok as the new capital in 1782. Bangkok is called "Krung Thep" in Thai, which means "city of angels".

Therefore, the official name of Thailand is "Kingdom of Thailand". And its official name is "Kyle London Maha Napola Mongolian Lavera Daniev Dacheng Bangkok Genoa Laling Temple" (Krung Thep Mahanakhon Amorrattanakkosin Mahathiryuthaya Mahadilokop Nopharattchathaniburom Udomratchan). Iwetmahahan Amonphimanawatanshit Sakkathiiyawitsanukamparasit), which contains the name of Bangkok.