Purpose: The purpose of this study was to identify which morphological markers have the best diagnostic accuracy to identify developmental language disorders (DLD) in monolingual Spanish-speaking children. Method: The participants in this study included 50 Spanish-speaking monolingual children with (n = 25) and without (n = 25) DLD. Data collection took place in Mexico. Children were administered a comprehensive elicitation task that set up felicitous contexts to produce morphological structures previously identified as problematic for Spanish-speaking children with DLD: articles, direct object pronouns, adjectives, plurals, verb conjugations, and the subjunctive in Spanish. Results: Statistically significant group differences between children with and without DLD were found for all morphological structures examined but plurals. Logistic regression analyses suggested that a model that included clitic and verbs was the best model to uniquely predict group membership. This model showed sensitivity of 96% and specificity of 80%. Conclusion: Clitics and verbs should be considered morphological markers of DLD in monolingual Spanish-speaking children.