Background: Pregnancy is commonly associated with thyroid disorders which have an impact on the fetal and maternal outcome. Among the various thyroid disorders, hypothyroidism is the commonest. There is a wide geographic variation in the prevalence of hypothyroidism. It varies from 2.5% in the west to 11% in India. Prevalence of hypothyroidism was found to be more in Asian countries compared with the west. Therefore the present study was carried out to study the prevalence of thyroid disorders in pregnancy in our hospital. To study the prevalence and fetal and maternal outcome in thyroid disorders complicating pregnancy in a teaching hospital.