This paper examined the internal consistency reliability of two newly developed alternate language versions of the Brief Symptom Inventory (BSI) (This is not the Bradford Somatic Inventory, which is also known as the BSI) when used with Polish and Filipino immigrants and the original versions of the BSI and its parent instrument, the Symptom Checklist 90 (SCL-90) when used with Irish immigrants; and, the theoretical and criterion related validity of the Psychoticism subscale of the BSI for Polish, Filipino, and Irish immigrants. Internal consistency estimates and triangulation of individual BSI global and subscale scores with verbal self-reports and clinical assessments demonstrated that the BSI is a relatively reliable and valid cross-cultural measure of psychological distress. However, problems with the Psychoticism subscale occurred across all three immigrant groups, which suggested that this subscale should be interpreted with caution when used with immigrants.