Mental health is a very important component that makes up an individual total wellbeing hence it is necessary to understand the mental status of asylum seekers. Recently there has been a high influx of asylum seekers in Nordic countries and their different asylum systems were explored in this thesis. Asylum seekers are faced with difficult and unfavorable conditions during their migration process to seek safety which can aggravate their mental-health conditions and trigger some mental health disorder such as post-traumatic stress disorders (PTSD), panic disorder, depression, psychosomatic disorders and anxiety. Mental rehabilitation of asylum seekers is important because it helps to ensure that they are well stabilized in the country where they reside. The aim of this thesis is to ascertain the common mental health disorders of asylum seekers in Nordic countries and outlining rehabilitation intervention methods that can be used to help asylum seekers achieve a positive mental health. The research aim seeks to ascertain the common mental health disorders amongst asylum seekers and refugees in Nordic countries and the effective mental health rehabilitation interventions used to treat asylum seekers and refugees in the Nordic countries. The data collection method used is systematic literature review (SLR). Literatures to be reviewed were selected using inclusion and exclusion criteria and specific keywords to search in electronic databases. The NICE (National Institute for Health and Care Excellence) tool was used for assessing the selected literatures and the process of selection was presented in a PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flowchart. Also, a PICO analysis was done. The databases used are SAMK Finna, Science Direct, Finna and PubMed. A total of five (5) articles were reviewed using the content analysis method. The results from this research study will be beneficial to health professionals dealing with asylum seekers at reception centers. The results highlight cognitive-behavioral therapy (CBT) and narrative exposure therapy (NET) to be effective standardized rehabilitative interventions for the treatment of mental health problems especially PTSD and depression among asylum seekers and refugees.