The objective of this research was to study tourists' brand image perception and factors related with destinations brand image in Thailand. The survey method employed questionnaire responses from 377 Thai tourists and 382 foreign tourists. The results are summarized as follows: 1. The brand image of Thailand's tourism destinations perceivd by Thai and foreign tourists at a "good" level and above are colorful nightlife, accommodation quality, economic growth, variety of products/shopping venues, variety of foods and food tastes, variety of entertainment venues, beauty of tourist attractions, variety of tourist attractions, integration of foreign residents, and climate. However, the brand image factors perceived by both Thai and foreign tourists at a "bad" level are the political riot management, drug problem solving, prostitution problem solving, and homelessness/beggars problem solving. 2. A varimax rotation produced the five final factor analyses. These factors have been labeled as (1) city's quality and convenience (2) city's social status and culture (3) city's atmosphere and social management (4) city's value for money and livable feeling (5) city's problem management.