The role of principal in a school context is multidimensional and complex. On one hand the principal manages the school matters as leader and on the other does an academic responsibility. There is a lack of studies to tell about the effect of leadership behaviour on teachers’ motivation to work in a high school context. This study examines the relationship between principals’ leadership behaviour and its relationship with teachers’ organizational motivation in a high school context. Data were collected from 220 teachers based on convenient sampling approach in district Swat, Khyber Pakhtunkhwa. Two scales such as leadership behaviour scale and organizational motivation scale were used as a tool of data collection. The collected data were analyzed using the spearman r correlation coefficient technique. Total five hypotheses were formulated to test the perceptions of teachers out of which only one was accepted and four were rejected. The results of the study revealed that there was strong negative correlation between dictatorial leadership behaviour and teachers’ organizational motivation. However, a strong positive correlation was found between supportive, participative and achievement oriented behaviour and teachers’ organizational motivation. The study concluded that teachers’ motivation reduces under a dictatorial leadership, whereas, teachers’ motivation increase under supportive, participative and achievement oriented leadership environment. It is suggested that the results of this study may be replicated or further studied in other context for better understanding.