This research aims to determine the use of humor in Turkish classes in secondary schools. To this end, firstly, the humorous elements in the Turkish textbooks were examined, and then Turkish teachers' views on these elements and their views and classroom practices regarding the use of humor in their classes were determined. The study was designed according to the case study method, one of the qualitative research methods. The humorous elements in the Turkish textbooks were collected through the document review method, and the views and classroom practices of the Turkish teachers regarding the use of humor were collected through a semi-structured interview form. In this context, interviews were made with 15 Turkish teachers working in public schools. The content analysis method was used to analyze the obtained data. According to the findings, most of the interviewed teachers included humorous elements in their classes through various classroom practices. In addition, it was determined that teachers consider humorous elements important because such elements increase students' motivation and make classes more interesting. Finally, it was concluded that Turkish textbooks do not contain enough humorous elements.