Introduction: Dysfunctional uterine bleeding is an abnormal bleeding from the uterus in the absence of organic disease of genital tract and demonstrable extragenital cause. Thyroid dysfunction is manifest by large number of menstrual aberrations.   Methods: This study is aimed at detecting thyroid dysfunction in patients with provisional diagnosis of dysfunctional uterine bleeding.This prospective study was conducted on consecutive 100 cases of clinically diagnosed dysfunctional uterine bleeding in the age group of 19 to 45 years attending gynae outpatient department at Govt. Hospital Sarwal. Results:  Patients were tested for their thyroid function by T3, T4, and TSH estimation. 22% of patients who were studied had thyroid dysfunction out of which 11% had subclinical hypothyroidism, 8% had hypothyroidism and only 3% of patients had hyperthyroidism.  Conclusion: Subclinical hypothyroidism and profound hypothyroidism together were the commonest thyroid dysfunction and menorrhagia was the commonest menstrual abnormality.