Background: Gestational diabetes is the most prevalent metabolic disorder during pregnancy. Therefore, it is essential to recognize its outcomes and complications. Objectives: The present study aimed to compare pregnancy outcomes in diabetic and healthy women. Methods: This case-control study was conducted on 380 diabetic and healthy women, who were divided into two groups of 190, at Moatazedi Hospital in Kermanshah, Iran in 2019. The participants were selected via convenience sampling. Data were collected using a researcher-made checklist designed based on the family records of the participants. Data analysis was performed in SPSS version 22 using chi-square, Fisher’s exact test, and the Mann-Whitney U test. Results: A significant correlation was observed between gestational age, maternal body mass index, birth weight, infant’s height, mode of delivery (P < 0.01), preeclampsia (P = 0.01), and the family history of diabetes (P = 0.03) in the diabetic and healthy pregnant women. However, no significant correlation was denoted between the five- and 10-minute Apgar scores, maternal disorders, and maternal care during pregnancy. Conclusions: According to the results, gestational diabetes is associated with an increase rate of complications, which must be diminished through prevention and disease control to promote maternal and neonatal health.