Critical pedagogy (CP), as a poststructuralist educational movement, challenges the asymmetrical, power-over nature of classroom discourse and seeks to accommodate multivocality in the classroom and in the society. This study probed the discourse architecture of EFL classrooms in Iran. Specifically, it aimed to explore to what extent Iranian EFL classrooms have stepped away from the teacher-dominant initiation-response-follow-up (IRF) discourse structure and welcomed CP-oriented dialogism and multivocality. To this end, a number of EFL classrooms in Isfahan and Shahrekord (Iran) were observed, and the running classroom discourse was audio-recorded, transcribed, and analyzed. The results showed that discourse-construction opportunities were distributed unevenly in favor of teachers regarded as the sole authority in the classroom. Student-regulated symmetrical talks were seldom evidenced in the classrooms. The findings further demonstrated that the power-over IRF discourse architecture, despite its communicative inadequacies, still seems to be dominant in EFL classrooms in Iran. Finally, it is suggested that L2 practitioners should move towards transforming the status quo, include more elements of CP into L2 classrooms, and invest in dialogism and multivocality as essential mechanisms to de-silence the students.