The aim of this study to observe the impact of obesity on the outcome of IVF and ICSI cycles and to compare the outcome of IVF or ICSI treatments in obese patients to that in morbidly obese patients. A total of 120 patients undergoing ICSI cycles were categorized on the basis of body mass index: (group A 30-34.9 group B ≥ 35 and group C< 30. No statistically significant difference among the three groups of patients as regard all the parameters of the outcome including dose and duration of drug used for stimulation, number of oocytes retrieved, number of embryos obtained and finally the implantation rate.