This research aims to investigate the scientific creativity of 9th grade students following the implementation of a project-based learning (PjBL) approach. The study involved a sample of 21 students from a high school in a Roi Et province during the first semester of the academic year 2023. Participants were randomly selected using classrooms as the sampling units. The research employed a pre-experimental design, specifically a one-group pretest-posttest design. The research tools included: 1. PjBL plans. 2. Assessment of scientific creativity. 3. Satisfaction questionnaire. Data analysis involved the use of means, standard deviations, and the dependent t-test statistic. It was discovered that students' scores on creative scientific thinking after the intervention were significantly higher than before, with statistical significance at the 0.05 level. Additionally, students expressed satisfaction after participating in the PjBL, with an average rating of 4.50, falling within the criteria for a high level of satisfaction.