This research, which aims to determine the regulatory role of mindfulness in the relationship between creative thinking and reflective thinking, is a mixed method research in which quantitative and qualitative research methods are used together. The research was designed in a mixed-method convergent parallel design. The quantitative part was conducted with a descriptive survey model and the qualitative part was conducted with a case study design. The quantitative sample of the research was selected by cluster and simple random sampling method from classroom teachers working in the central districts of Konya province. The qualitative sample was selected from teachers who had at least one study on creative, reflective thinking, and mindfulness; had completed postgraduate education, and had ten years or more of professional seniority with the criterion sampling method from the teachers in the quantitative sample. In the quantitative part of the study, "creative thinking, reflective thinking, and mindfulness" measurement tools were used after obtaining the necessary permissions. Confirmatory factor analysis and reliability analysis were performed separately for these measurement tools. In the qualitative part of the study, interviews were conducted with a semi-structured interview form. When the quantitative and qualitative findings of the study were evaluated together, it was concluded that mindfulness has a regulatory role in the relationship between creative thinking and reflective thinking.