Mental health problem is one of the growing major public health issues in the Asia Pacific region. It contributes to the high number of Disability Adjusted Life Years (DALYs), morbidity and mortality in the region. It is expected that leading mental health problems will occur in the low-and middle-income countries (LMICs) and majority of the countries which comes under this category are in the Asia Pacific region. In addition, mental health problem hamper the achievement of Millennium Development Goals (MDGs), particularly MDG 1, MDG 4 and MDG 5. The most common mental health problems in the region are depression, anxiety, posttraumatic stress disorder, suicidal behaviour and substance abuse disorder. Several modifiable and non-modifiable risk factors were identified for the cause of these major mental health issues. Interventions, programmes and policies need to be designed in order to curb mental health problems at all levels.