The purpose of this study was to compare thinking styles between the gifted students in science and invention The subjects were 191 gifted elementary students in science and 182 gifted elementary students in invention, who enrolled in gifted education program. They were given the Thinking Style Inventory (TSI) that standardized Korea version by Yun (1997), which constructed 13 thinking styles of 5 dimensions (functions, forms, levels, scopes, and leanings of the mental self-government). The collected data were analyzed by independent sampling t-test and ANOVA with SPSS. The findings of this study were as follows: the gifted in science prefer executive, oligarchic, and global thinking styles rather than the gifted in invention. Meanwhile, the gifted in invention prefer legislative, judicial, local, and liberal thinking styles rather than the gifted in science. Both of the gifted in science and invention prefer legislative, executive, monarchic, anarchic, external, and liberal thinking styles. There was statistically significant differences between boys and girls in executive, oligarchic, local, and liberal thinking styles of the gifted in science.