Students' level of creativity influences their creative thinking processes. Students with different levels of creativity tend to demonstrate variations in how they approach creative thinking. This study is a qualitative research with a descriptive approach, aiming to describe the creative thinking processes of junior high school students in solving open-ended mathematical problems. The subjects of this study consisted of three students: one with a highly creative thinking level, creative thinking level, and moderately creative thinking level. Data were collected through written tasks involving mathematical problem solving and follow-up interviews. The results revealed that the student with a highly creative thinking level demonstrated strong abilities in integrating various sources of information, generating ideas independently and flexibly, and producing accurate solutions. The student with a creative thinking level was able to construct and plan ideas effectively but tended to use familiar strategies without further exploration, resulting in correct yet less innovative solutions. Meanwhile, the student with a moderately creative thinking level was only able to generate a single, simple idea, used familiar strategies without systematic planning, and produced inaccurate solutions while lacking the ability to evaluate the outcomes effectively. The results of this study can be implemented in mathematics learning by providing students with opportunities to develop their creative ideas through open-ended problems, encouraging the exploration of various problem-solving strategies, and creating a learning environment that values original and flexible thinking processes.