ObjecƟ ve: Determine the risk factors associated with Intrauterine Growth RestricƟ on (IUGR), in paƟ ents of Simon Bolivar Hospital in Barranquilla (Colombia), January 2012-June 2013. Materials and Methods: Case-control study in 50 paƟ ents with gestaƟ onal age to term and products with Intrauterine Growth RestricƟ on in Simon Bolivar Hospital of Barranquilla (Colombia), the control group consisted of 50 paƟ ents whose products showed no abnormality. For tabulaƟ on was used Epi-Info 3.5.1. The p value was <0.05. Results: For age <18 years was obtained: OR = 3.95, CI = 1.36 - 11.4, p = 0.008; fi ndings for low socioeconomic status were: OR = 3.09, CI = 1.22 - 7.82, p = 0.01; results for the condiƟ on of primiparous were: OR = 3.08, CI = 1.37 - 6.91, p = 0.005; weight <55 kg: OR = 5.64, CI = 1.35 - 23.6, p = 0.009; weight gain (<8 kg) showed: OR = 2.68, CI = 1.19 - 6.03, p = 0.01; in the case of smoking was found: OR = 5.68, CI = 1.03 - 34.4, p = 0.03; for anemia OR = 2.32, CI = 1.02 - 5.28 and p = 0.04; height <165 cm showed OR = 2.98, CI = 1.08 - 8.263, p = 0.03 and placental abnormaliƟ es OR = 6.29, CI = 1.51 - 26.1, p = 0.005. Conclusion: Age <18 years, low socioeconomic status, maternal height <165 cm, maternal weight less than 55 kg at the end of gestaƟ on, primiparity, placental abnormaliƟ es, low maternal weight gain, anemia and smoking during pregnancy, are risk factors for IUGR.