This study explored the development of teacher leadership in collaborative online spaces, also called virtual communities of practice (vCoP). Employing a phenomenological research design with semi-structured interviews as the primary data collection method, participants were drawn from a single vCoP. The findings underscored the pivotal role of vCoPs in nurturing teacher leadership skills, facilitated by the dynamic interplay of teacher agency and distributed leadership. Teacher agency empowers educators to proactively take control of their learning journey within vCoPs, enabling them to explore areas of personal interest and expertise, including knowledge sharing and project initiation. Simultaneously, distributed leadership empowers teachers to assume leadership roles within the vCoP, irrespective of their formal positions or seniority, involving activities such as guiding discussions and organizing professional development. This harmonious collaboration between teacher agency and distributed leadership fosters a collaborative and inclusive environment within vCoPs, where teacher leadership thrive.