The purpose of this research was to determine whether supervisor support (SS) plays a moderating role in the perception of overqualification (POQ) on workplace loneliness (WL) among music teachers in Turkey. The research was based on the assumption that loneliness, which is a negative emotional state and expresses employees' inability to establish a healthy relationship within the organisation, may arise from music teachers' perceived overqualification and can be shaped with the support of this relationship. With this study we discovered that perceived overqualification has a definite and significant impact on WL. It was also discovered that supervisor support moderated the relationship between perceived overqualification and WL. Consequently, although music teachers felt overqualified, they did not feel lonely at work if their supervisor provided strong support.