This thesis explores creativity in mathematics teaching, with a special emphasis on the role of the creative teacher. The first part of the thesis defines the concept of creativity, types of creativity, and specifically mentions mathematical creativity and states its definition and characteristics. The second part of the thesis is dedicated to the creative mathematics teacher. Characteristics that make a teacher creative are considered, then how creativity is manifested in teaching mathematics, and it is stated how a teachers' understanding of creativity influence their practice. Additionally, ways to develop creativity in teachers are mentioned. The third part of the thesis presents my own research conducted with four teachers: two primary school teachers and two secondary school mathematics teachers. Interviews were conducted with the teachers to investigate their understanding of creativity, followed by an analysis of their mathematics lessons to compare their understanding with their practical application. The thesis contributes to a better understanding of the importance of creativity in education, particularly in the context of mathematics teaching, and offers guidelines for improving teaching practices through the development of teachers' creative competencies.