The aim of this study is to test the validity of the purchasing power parity hypothesis with the help of panel unit root tests taking into account the cross-sectional dependence as well as structural breaks for ASEAN (Indonesia, Malaysia, Thailand, Philippines, Singapore, Brunei, Vietnam, Laos, Cambodia). For this purpose, monthly data for the period 1995: 01-2017: 05 was used. According to the results of the Panel LM test which takes into account the structural breaks, it was found that the hypothesis of purchasing power parity is valid for ASEAN countries. [ABSTRACT FROM AUTHOR]