Background: Obesity has been recognized by WHO as "a pandemic nutritional disorder which represents a rapidly growing threat to the health of populations of countries world wide". As obesity increases, so does the number of women of reproductive age who are overweight and obese. The problems related to the management of obesity in pregnancy are many. There are both short-and long-term complications and implications for both mother and fetus. Aim of the Work: Evaluation of the effect of maternal obesity on labor induction in post-date pregnancies. Patients and Methods: This prospective case-control study was conducted on two hundred (200) pregnant women who were divided into 2 groups: 100 non-obese pregnant women with BMI < 30 kg/m2 and 100 obese pregnant women with BMI ≥ 30 kg/m2 . These women were investigated for success of induction of labor. All women participants were recruited from Al Hussein and Military Hospitals Departments in the period from 12 – 2017 till 11 – 2018. Results: As regards success of induction, our study revealed that a greater number of obese women had failed induction ending in CS delivery ( no dilatation of cervix after 24 hours of vaginal prostaglandin ) compared to their normal weight counterparts. Conclusion: Obesity is associated with increased incidence of failure of induction of labor ending in CS delivery, increased duration of induction of labor till vaginal deliveries, low Apgar score and increased fetal birth weight.