Generation Z is the most recent wave of young professionals to enter the workforce, and they are becoming an increasingly essential part of industry. Gen Z will soon dominate Indonesia's generation and there is a phenomenon that this youngest workforce cohort has higher turnover rate compared their previous generation. As a result, it is critical to develop a leadership style that encourages employee engagement among this generation to reduce turnover. However, there has been limited study examining perceived organizational support as mediating effect between authentic leadership toward turnover intention in Indonesia. Therefore, this study aims to investigate the effects of authentic leadership as an important leadership characteristic that may lower turnover intention, as well as how perceived organizational support may have a mediating effect on turnover intention among gen Z. The research is a quantitative study that was conducted using SmartPLS4 and a purposive sampling technique. An online survey with a questionnaire created using google forms and scored using 5-point likert scales is used to gather data. The respondents were 116 generation Z employees born between 1995 and 2012 in Jakarta, Indonesia. According to this study, authentic leadership has a low direct effect on turnover intention, but with the mediating variables of perceived organizational support, authentic leadership has a considerable and significant negative effect on turnover intention.