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Background: Dengue and chikungunya infections are transmitted by the Aedes aegypti vector; they can affect the pregnant woman and her gestation product., Objective: To identify if dengue and chikungunya infections during pregnancy are factors associated with the presence of obstetric complications, in Colima, Mexico., Methods: We included in this study 45 patients with obstetric complications and 90 without complications, selected by a two-stage sampling. We collected the sociodemographic, anthropometric, gynecological, and obstetric complications’ data. Descriptive statistics, non-parametric significance tests and crude and adjusted risk estimates (odds ratio [OR] and 95% confidence intervals [95% CI]) were calculated., Results: Out of 135 patients included, 15 had a diagnosis of dengue and 20 of chikungunya. There were obstetric complications in 60% of infected patients with chikungunya, 46.7% with dengue and 26% of non-infected (p = 0.007). Chikungunya infection (adjusted OR = 1.6) and antecedents of abortion and cesarean section (adjusted OR = 2.2) were independent risk factors associated with the presence of complications. Dengue had an adjusted OR = 1.3 without a statistically significant difference., Conclusions: Chikungunya infection and antecedents of abortion and cesarean section are risk factors associated with obstetric complications. Their timely detection is a priority as a preventive strategy.