The aim of this study was to evaluate prevalence and severity of anterior deep bite among a sample of orthodontic patients. The sample for the current study comprised the pretreatment records of 800 patients (256 male, 544 female) collected from the outpatient clinic of Orthodontic Department. Faculty of Oral and Dental Medicine. Cairo University. The records for each case enrolled into the sample included panoramic, lateral cephalometric radiographs and a well trimmed study model which were analyzed regarding molar relationship according to Angle’s Classification, canine relationship, overjet and overbite. Records were then screened to identify cases with deep bite from which 200 patients were randomly selected for cephalometric analysis. Lateral cephalometric radiographs of the 200 patients were traced and analyzed to identify underlying skeletal pattern. The data was statistically analyzed by SPSS. Results: The prevalence of anterior deep bite among the sample of Egyptian orthodontic patients was 65.6%. There was no difference in the prevalence of deep bite between males and females. Out of patients having deep bite, the majority (80.8%) had mild deepbite, 15% had moderate deep bite and 4.2% had severe deep bite. There was a difference in the severity of deep bite between males and females. Higher percentage of males had moderate to severe deep bite. Skeletal contributing factors were associated with 15% of patients with deep bite. There was no difference in the prevalence of specific skeletal pattern between males and females with deep over bite.