Challenges faced by International non – governmental organizations (INGOs) on enhancement of refugees’ wellbeing were complex. Mostly refugees’ experiences were debilitating as they struggled with stigma due to mental health conditions, poor social networks due to discrimination faced in the host country, disorientation and insufficient language to communicate or initiate conversations. This study was guided by Trauma Theory and it employed descriptive research design. Both primary and secondary data were utilized in the study. Data collection utilized questionnaires, interviews, Focus group discussions and Observations checklist on accessibility and safety of INGOs’ interventions. Data was analysed by statistical Packages for Social Science (SPSS 22). Data was presented in tables, bar graphs and pie charts. The findings of the study demonstrate that INGOs faced language barriers, financial barriers, lack of culturally responsive psychosocial interventions, insufficient security and long-term mental health conditions in enhancement of wellbeing of refugees in Dadaab camp. Most refugees reported their trauma occurrences to INGOs. The study concluded that cultural stereotypes, stigma, fear, Limited knowledge and information about mental healthcare, limited clinical competency and language barrier were major challenges faced by INGOs in enhancement of refugees’ wellbeing.