Aim: In the present study it was aimed to evaluate the correlation between Body Mass Index (BMI) of pregnant women and the anthropometric measures of their newborn babies. Materials and Methods: BMI of four hundred pregnant women who were followed up in Beykoz district between January 2011 and June 2020 and the records of the height, weight and head circumference measurements of their babies were retrospectively analyzed. During the follow-up, the study group consisted from pregnant women with a Body Mass Index (BMI) of 30 and above, and the control group among the pregnant women with a Body Mass Index (BMI) of <30. Both groups were compared in terms of neonatal outcomesResults: A total of 347 pregnant women were included in the study. When birth weights of newborns of obese pregnant subjects and non-obese pregnant controls were compared; It was observed that babies of obese pregnant women were significantly heavier than non-obese (3424.63±510.46 vs 3105.45±397.07; p<0.001). Height and head circumference of the newborns were similar in both groups (49.54±2.46 vs 49.68±2.66 p = 0.840 and 34.71±1.85 vs 34.65±2.05 p=0.735, respectively).Conclusion: It was shown in our study that obesity, which is an important health problem in pregnant women, also affects the newborn weight.