In this study, the aim is to identify the interpersonal self-efficacy beliefs of German teacher trainers' in Turkey. It is a descriptive survey and the population of the study consists of German teacher trainers who have worked in the seven regions of Turkey during the 2012-2013 academic year. The sample comprises 52 German teacher trainers chosen randomly from the related population. The version of "The Teacher Interpersonal Self-efficacy Scale (TISE)" which was developed by Brouwers and Tomic (2002), translated into Turkish and whose reliability and validity were determined by Çapri and Kan (2006), was used to collect data. As a result of the study, it is understood that the level of self-efficacy beliefs, particularly of more experienced male teachers, is high.