Introduction: Abnormal Uterine Bleeding (AUB) is a term which refers to menstrual bleeding of abnormal frequency, duration or quantity. It is a common gynecological complaint accounting one third of outpatient visits to gynecologist. Abnormal Uterine Bleeding includes Oligomenorrhoea, Polymenorrhoea, Hypomenorrhoea, Menorrhagia, Metrorrhagia and Dysfunctional Uterine Bleeding. This paper elicits the prevalence of different menstrual disorders among women with Abnormal Uterine Bleeding. Objective: To observe the prevalence of different menstrual irregularities in patients with Abnormal Uterine Bleeding. Methodology: The study was carried out in the Gynaec out Patient Department of National Institute Unani Medicine Hospital during the years of 2014__ampersandsignndash;2015.Total 1362 patients of Abnormal Uterine Bleeding were included in the study on basis of clinical sign and symptoms and history. Results: Among 7471 Gynaec patients 1362 (18.23%) patients were found with Abnormal Uterine Bleeding (AUB) and out of 1362 patients of Abnormal Uterine Bleeding highest were with menorrhagia i.e. 450 (33%) and least were with hypomenorrhoea i.e. 162 (11.89%). Prevalence of menorrhagia was highest between the ages of 25-34 years. Conclusion: It is concluded that the prevalence of menorrhagia is high among all Abnormal Uterine Bleeding and it affects woman health status, quality of life and social integration. It is suggested that menstrual complaints should be thoroughly evaluated and treated on a top priority.