About 70% of noncardiac chest pain (NCCP) patients have mental disorders as reported from Western countries. The phenomenon of somatization is considered to be aetiologically important in the genesis of NCCP. Though somatization is generally considered as more prevalent among non-Western cultures, systematic studies of mental disorder among NCCP patients are rare from developing countries. Based on treadmill test, 54 male inpatients in a cardiology general ward in India were divided into a group having ischaemic heart disease (IHD) and another group of NCCP. A psychiatric interview was conducted blindly on these subjects with the help of a structured interview schedule, and DSM-III-R diagnosis was made. Sixty-eight percent in the NCCP group and 27% in the IHD group had a mental disorder. The total number of subjects with a mental disorder, including panic disorder and major depression, were significantly more in the NCCP group. Mental disorders appears to be equally common among NCCP patients in developing countries also and detailed psychiatric assessment is warranted in patients with chest pain of non-IHD origin.