There are different views on the origin of Thailand. Three decades ago Thailand was believed to have its origins 4,500 years ago from northwest Szechuan in China, and later the Thai moved to the current location of the country. This theory is considered obsolete. Unquestionably the most important archaeological discovery confirming the existence of ancient people on the Thai lands was made in the tiny village of Ban Chaing near Udon Thani in northeastern Thailand.

Ban Chaing's systematic excavations only begin over two decades, revealing painted ceramics, jewelry, bronze and iron tools / implements. The settlement began around 3600 BC. The people of Ban Chaing cultivated rice, domesticated animals and experienced potters. But long before the arrival of people wandering around the northeastern plateaus, this region was the only home of an older animal species - the dinosaur. In 1984 the fossils of a dinosaur plant were discovered in the province of I'lni Wiang and called Phuwaingosaurus sirindomae. Over the centuries, Thailand has been under the influence of different cultures, from the Indians in the 3rd century,

Experts believe that the Thai-dominated culture has arrived with tribes that have moved from southern China almost a thousand years ago. They are housed where northern Thailand is now located before it expanded south to the rich plains and valleys, gradually asserting its independence from the Khmer and Mongol kingdoms.

Siam is the name with which the country is known to the world until 1939 and again between 1945 and 1949. On May 11, 1949, the country's name was officially changed to Thailand.