The official language of Thailand is Thai, which is spoken by the majority of the population. Thai is a member of the Tai-Kadai language family, which is also spoken in Laos, Cambodia, and Vietnam. Besides Thai, there are also several minority languages spoken in Thailand, including Lao, Karen, and Malay. According to a 2021 survey, the most common languages spoken in Thailand are Thai, English, Chinese, Burmese, and Malay. English is also widely spoken in tourist areas, and many Thais learn English in school. However, its always a good idea to learn a few basic Thai phrases before visiting Thailand, as this will help you communicate with locals and show respect for their culture, as well as make your trip more enjoyable for yourself.