The main aim of this research is to investigate the impact of volunteer management practices on volunteer retention through the mediating role of volunteer motivation. Data has been collected through conducting an online questionnaire. A convenient sample is composed of 384 volunteers in the Egyptian charity organizations. The PLS-SEM has been used to analyze the impact of volunteer management practices on volunteer retention. The results reveal that there is a significant positive impact of volunteer management practices on volunteer motivation. In addition, there is a significant positive impact of volunteer motivation on volunteer retention. Moreover, the results indicate that volunteer management practices have a significant positive impact on volunteer retention. Finally, the results show that volunteer motivation mediates the impact of volunteer management practices on volunteer retention. Based on the research findings, volunteer-based organizations must use effective management practices to motivate volunteers and increase their retention.