The role of teachers in promoting learner autonomy has been the focus of second language acquisition researchers for more than a decade. This paper aimed at exploring perceived constraints in promoting learner autonomy, from the perspective of teachers. A sample of 16 university lecturers teaching communication skills in four public universities of Punjab was selected through purposive sampling. Following a qualitative approach, data were gathered through semistructured individual interviews which were later transcribed and analyzed thematically. Three major reported categories of constraints that emerged from the data were sociocultural, psychological, and institutional constraints. Sociocultural and psychological constraints were found to overlap and were linked in a complex way, where Pakistani culture was found ingrained in teachers' and learners' practices. Findings indicated that perceived barriers must be kept in mind while planning strategies to achieve learner autonomy in the classroom.