Objectives: To evaluate the effect of glycemic control on umbilical and fetal middle cerebral arteries Doppler indices in pregestational diabetic pregnant women. Methods: 60 insulin-dependent pregestational diabetic pregnant women were included and equally divided into two groups according to HbA1C levels namely; controlled diabetics ( HbA1C < 6.5 %) and uncontrolled diabetics (HbA1C ≥ 6.5 %). UA, MCA Doppler indices (resistance index and pulsatility index) and Cerebroplacental Doppler ratio were measured for every patient. Results: There was no statistically significant differences in umbilical artery, middle cerebral artery Doppler indices and cerebroplacental ratio between the controlled & uncontrolled pregestational diabetic pregnant women. Conclusion: Doppler indices of placental or fetal circulation are unaffected by maternal glycemic control in pregestational diabetic pregnant women.