Teacher leadership is pivotal for the development of educational institutions. However, teachers’ perceptions about teacher leadership have been under explored. In this study, the researchers review sixteen studies conducted in the USA, South Africa and other European, Asian, and Middle Eastern countries. Four themes emerged after analysis of the texts: perceptions of teachers about teacher leadership practices, factors influencing teacher leadership, teacher leadership development, and barriers to teacher leadership. Results show that teacher leaders are engaged in mentoring teachers, coordinating with administration, curriculum development and implementation, and subject matter development. The physical environment of the school, teachers’ age, experience, qualification, and support from the administration also influences teachers’ perceptions about teacher leadership. Teacher leadership development is influenced by teachers’ own beliefs, principals’ support and teachers’ professional development. Some barriers to teacher leadership are also discussed in this paper.