Introduction: Psychological morbidities are common amongst healthcare professionals particularly among junior house officers (HO) who are in a transitional stage from being a medical student to a doctor. They undergo many stressors during this period and hence might suffer from higher psychological morbidities such as depression, anxiety and stress. Objectives: To determine the prevalence of depression, anxiety and stress among HO in Sarawak General Hospital (SGH), Kuching, Sarawak. The socialdemographic factors were also evaluated to identify the high-risk groups. Materials and methods: This is a descriptive cross-sectional study involving 227 house officers in SGH over a period of three months. The social-demographic data such as age, sex, marital status, current posting, duration of posting, place of graduate and state of origin were obtained from interviews with the respondents. The Depression, Anxiety and Stress scale (DASS) questionnaire was completed to assess the psychological morbidities. Results: HO were found to have high prevalence of psychiatric morbidities such as depression (42%), anxiety (50%) and stress (42.7%). Foreign graduates showed a significantly higher odds of depression (odds ratio, OR: 3.851; 95% confidence interval, 95%CI: 2.165, 6.851), anxiety (OR: 2.427; 95%CI: 1.394, 4.225) and stress (OR: 2.524; 95%CI: 1.439, 4.427) as compared to local graduates.. Further, non-Sarawakians were observed to have higher odds of developing anxiety (OR: 1.772; 95%CI: 1.022, 3.073) as compared to the Sarawakians. Conclusion: HO in SGH had high prevalence of depression, anxiety and stress. Therefore, psychiatric morbidities should be screened regularly amongst the HOs in Malaysia.