Background: Thyroid disorders rank as one of the prevailing endocrine disorders frequently observed during the course of pregnancy. Aim of the work: This study assessed the thyroid disorders frequency among pregnant women residing in Benha City, Egypt, elucidating the types of disorders, their distribution across trimesters, and potential correlations with demographic factors, obstetric history, and thyroid function test results. Methods: This Cross-section study included 173 pregnant females with abnormal thyroid function. A comprehensive history, and a thorough clinical examination- were conducted [demographic data, drugs, obstetric history, previous pregnancy outcome& complication, manifestation on thyroid dysfunction and family history of thyroid diseases], lab investigation [serum TSH serum freeT3 & serum freeT4, TSH value of American Thyroid Association (ATA) 2011]. Results: According to abortion history, overt hyperthyroidism is more likely to have a higher number of abortions compared to those with gestational or subclinical hyperthyroidism (p=0.007). There was significant higher median number of abortions in overt hyperthyroidism group compared with gestational hyperthyroidism group (p=0.033), although a significant higher median number of abortions in overt hyperthyroidism group compared with subclinical hyperthyroidism group (p=0.002). Overt hypothyroidism was more likely to have a higher number of abortions compared to those with isolated maternal hypothyroxinemia or subclinical hypothyroidism (p