Abstract
This paper focuses on the motivation to learn Japanese language for Thai high school students. 440 students from 14 schools were surveyed, and 83% of them were classified into the high-motivation group. As a result of factor analysis, there were four factors that related to motivation: "interest and value recognition in acquiring Japanese," "expectation and realizing for improvement," "teacher's instruction style," and "low workload." From the results of multiple regression analysis, it was suggested that "interest and value recognition in acquiring Japanese" is a factor that greatly influences the level of motivation.