The aim of this study was to examine the influences of facilitative team interaction on the educational outcomes (self-evaluated entrepreneurial giftedness) of a project-based learning (PBL) program designed for entrepreneurial-gifted Korean adolescents. One-hundred thirty-one (131) gifted adolescents participated in the two-day PBL gifted program provided by KAIST. Self-evaluations of entrepreneurial giftedness for the basic and the advance course were collected before and after provision of the program, and the perceived quality of team interaction was also assessed. Using repeated-measures ANOVA, the main effects and interaction effects of time and perceived quality of team interaction on entrepreneurial giftedness were analyzed. The level of entrepreneurial giftedness self-evaluated by the basic class participants before the program started was higher than that in the advanced course, while the post-scores were not significantly different between the basic and advanced course after controlling for the impact of the pre-scoring. The quality of team interaction was shown to have a more positive impact on the changes in entrepreneurial giftedness for the advanced course than for the basic course. The change of entrepreneurial giftedness for the basic course increased significantly in both of the groups with high and low quality of team interaction. In contrast, however, the change in self-evaluated entrepreneurial giftedness increased significantly in the group with high quality of intra-team interaction, although the change was weak in the group with a low quality of interaction. The study results are discussed in light of the social influences interacting with entrepreneurial competence in gifted adolescents and the educational implications of how to facilitate entrepreneurial giftedness.