Pattaya is a city in Eastern Thailand, the second-largest city in Chonburi province and the eighth-largest city in Thailand. It is on the east coas…Pattaya is a city in Eastern Thailand, the second-largest city in Chonburi province and the eighth-largest city in Thailand. It is on the east coast of the Gulf of Thailand, about 100 kilometres southeast of Bangkok, and has a population of 328,961 as of 2021.