Literature survey showed that there is no stability indicating HPLC method for the determination of clobazam in the presence of its degradation products or its degradation behavior under stress conditions. Hence, it is important to develop an accurate, rapid and specific stability indicating analytical method, which is suitable for routine quality control analysis of clobazam in pharmaceutical dosage forms. Stress testing provides important information about the stability of the drug substance under different conditions. Moreover, the suitability of the proposed analysis technique could be verified. In this study, reversed-phase HPLC method is proposed for the determination of clobazam in bulk drug and pharmaceutical dosage forms. The stability tests were performed under different conditions according to the International Conference on Harmonization (ICH) guidelines to find out the suitability of the proposed analytical technique in the presence of degradation products.