The purpose of this study is to investigate how shared leadership, as perceived by players within a soccer team, influences teamwork execution and the state of flow. To achieve the objectives of this study, a purposive sampling method was employed, and soccer players registered with the Korea Football Association were selected as the research participants. Subsequently, data were collected using self-report surveys on shared leadership, teamwork execution, and flow state. Data from 415 participants were utilized for analysis, and data analysis was conducted using the SPSS 26.0 and AMOS 21.0 programs. Shared leadership was found to have a positive association with teamwork execution and the state of flow. Furthermore, the mediating effect of teamwork execution in the relationship between shared leadership and the state of flow was found to be significant. The results of this study emphasize the influence of leadership that is shared among team members rather than the effectiveness of individual leadership.