The purpose of this study is to reveal the viewpoints of master trainers and staffed teachers working in informal education institutions on teacher leadership. Six staffed teachers and six master trainers who were determined with convenience sampling, which is among purposeful sampling methods, participated in the study that was conducted using qualitative research method. The study was conducted in phenomenological design, which is among qualitative research designs. Thus, in order to collect data in the study, a semi-structured interview form was prepared and the interview technique was used. The data were analyzed using the content analysis technique. All the data acquired in the study were coded, various dimensions and convenient themes were determined in accordance with the study purpose and finally, percentages and frequencies concerning the themes were calculated. A theme analysis was also performed in the analysis of the data and the participants' viewpoints were included extensively. As a result of the study, it was determined that all the participants were aware of the concept of teacher leadership that they received in general and already had some information before but evaluated this concept mainly as sharing the classroom management and some administrative tasks.