Based on the prison database records, most of the prisoners in the correctional institution in Indonesiaan are narcotics convicts. Interestingly, many of these prisoners are addicts, abusers, and victims of drug abuse who must be rehabilitated immediately to recover from drug addiction. This is what encourages correctional institutions to carry out narcotics rehabilitation for inmates. However, according to research results from the Research and Development Agency for Law and Human Rights, the implementation of narcotics rehabilitation at the correctional unit has not been effective because it has not been on target and implemented in an integrated and sustainable manner. One of the causes is the inadequate role of correctional advisers in the narcotics rehabilitation process. Therefore, the aim of this study is to determine the role of correctional advisers in the narcotics rehabilitation process. This study uses a qualitative and descriptive approach. Correctional advisers have an important role in every stage of narcotics rehabilitation. Correctional advisers have the duties and functions to verify, provide assistance, guidance and act as addiction consultants to supervise the development of rehabilitation of prisoners who participate in rehabilitation. This role is to ensure the accuracy of targeting and the sustainability of the rehabilitation phase. Therefore, to optimize the role of the Correctional adviser, the Director General of Correctional must increase the capacity and competence of correctional adviser.