The potential benefit of employing a flipped learning approach, where learners are presented with the content preceding the class time, is to make a shift from traditional teacher-centered learning environments to more learner- and learning-centered ones. As this content delivery should be short, small, fine, and powerful, 'microlearning' as a new method of content-delivery in mediated environments, is suggested. The purpose of this study is to examine the effect of this flipped learning approach on raising Iranian EFL learners' self-regulation. This study was undertaken on 26 intermediate students in a nine-week course held at an English Institute in Tehran, IRAN. Of the participants, 13 learned English using a task-based language teaching (TBLT) approach in a non-flipped learning setting, whereas 13 studied English in a flipped learning setting. The data was collected in three sections: self-regulation survey flipped learning questionnaire and focus group interviews. Findings demonstrate that the latter were more aware of the learning process itself, playing a more active role in the classroom, while enjoying learning, as being more engaged in the learning progress, resulting in the development of their autonomy and self-regulated learning.