Thyroid disorders are the common endocrine disorders affecting women of reproductive age group and hence pregnancy also. 500 antenatal women irrespective of thyroid status at first visit will be screened for TSH level. Serum free T4 and T3 level will be measured in patient with abnormal TSH level. Pregnancy outcome in both the groups in terms of pregnancy induced hypertension, abortion, GDM, preterm labour, complicated delivery and other maternal complications were evaluated. Prevalence of subclinical hypothyroidism (7.1%) and overt hypothyroidism (2.9%) was high. Significant adverse effects on maternal outcome were seen in patients with thyroid dysfunctions emphasizing the importance of routine antenatal thyroid screening.