The ProGram theory assumes that pronouns can be classified into lexical and grammatical pronouns. Based on Boye & Harder's (2012) theory of the distinction between lexical and grammatical elements, it is predicted that grammatical pronouns are significantly more impaired than lexical pronouns in agrammatic aphasia. The objective of this study was to investigate whether Moroccan Arabic agrammatic subjects exhibit a dissociated processing ability between grammatical and lexical pronouns. Narrative speech was elicited from 5 agrammatic patients and 5 normal controls using the “Cookie Theft” picture description task from the Boston Diagnostic Aphasia Examination. Findings supported a grammatical-lexical dissociation in Moroccan Arabic agrammatism.