Transformational leadership has been characterized by vision and inspiration while the emphasis of instructional /pedagogical leadership is on framing clear goals and objectives and then achieve them through careful planning and monitoring. Headteachers play the leading role in school improvement and increase and maintain instructional effectiveness. Their prime focus is on learning outcomes and enhancing the quality of the teaching-learning process. A qualitative research design was applied to get headteachers' perspectives about role of instructional leadership in successful execution of the curriculum. Purposively 14 headteachers were selected to conduct interview. Among them 7 were female headteachers and 7 were male headteachers. The interview protocol was developed after reviewing literature and discussing role of instructional leaders in successful execution of curriculum with experts in the area and renowned educationists. It was revealed that school heads as instructional leaders have an important role in successful execution of curriculum