Competent adult learning facilitators play a vital role in improving the quality of adult learning programmes. This article thus explores common and core competences of adult learning facilitators from the perspective of key stakeholders, such as facilitators, adult learners and administrators. By synthesising previous international studies, we developed a survey and collected data in Mongolia (n = 227). We identified adult learning facilitators' common and core competences focusing on their teaching role. As found, areas of adult learners' needs assessment, communication and motivation should be integrated in professional development programmes in order to aim for a better completion rate and higher participation of target audiences in adult learning programmes.