Introduction: Psychotherapy is a form of treatment intervention targeting problematical human behaviour, emotion, and cognition using various psychological techniques and approaches. In Malaysia, the application of psychotherapy in ameliorating criminality among forensic populations is developing and evidence shows that some therapies like Cognitive-Behavioural Therapy and Reality Therapy have been practiced in many correctional institutions. Objective: This paper aims to review the role of psychotherapy for help in correctional settings as a means to ameliorate criminal behaviour and reduce recidivism rates. Method: An archival research was utilised, where articles and books regardless of the year of publication from different countries, including Malaysia were examined. Several keywords were used for the purpose of retrieval of related articles. Results and Discussion: Three different approaches of psychotherapies, i.e. Behavioural Therapy, Cognitive Therapy and Cognitive-Behavioural Therapy and their principles and effectiveness in rehabilitating the forensic populations were elaborated in this review. The principle behind the effectiveness of the psychotherapy was different, and this influences the choice of treatment that should be used in dealing with the forensic populations. Conclusion: Â Forensic populations have rights to obtain treatment, and the choice of therapy has to be relevant within the context of cost-effectiveness to ensure optimum effectiveness in ameliorating criminal tendencies. Â