This systematic review aimed to provide a comprehensive view of critical pedagogy-informed collaborative professional development practices in English language teaching. Using four databases and relevant keywords, we found 67 studies conducted in Asia, South/Central/North America, Europe, Australia, and the Gulf countries and systematically analyzed them. Results show that critical collaborative practices enabled teachers to develop a critical stance, implement pedagogically critical actions, and initiate social change regarding social awareness and power distribution. However, these changes, visible in teachers' pedagogical practices, have not expanded onto a macro-social level. Implications for language teacher development program planners and policymakers are discussed.