Cognate object constructions involve verb–noun pairs in which the noun is morphologically and semantically related to the verb (e.g., smile a smile). These constructions have been the subject of ongoing debate in linguistic theory, particularly concerning their syntactic and semantic properties. Key issues include the extent to which cognate objects occur in modified or unmodified forms, their definiteness, the classes of verbs they occur with, and, most prominently, their argument–adjunct status—that is, whether they function as arguments of the verb or as adjuncts. Previous research presents conflicting analyses: while some scholars argue that cognate objects are syntactic arguments (e.g., Massam, 1990; Macfarland, 1995), others classify them as adjuncts (e.g., Jones, 1988). Although cognate objects are widely attested cross-linguistically, including in Arabic, scholarly attention to their behavior in Arabic has been limited. Research has primarily focused on Standard Arabic, with little to no investigation into regional varieties. To the best of my knowledge, no prior studies have examined cognate object constructions in Algerian Arabic. This thesis seeks to fill that gap by exploring the occurrence and syntactic status of cognate objects in Algerian Arabic. Through a detailed analysis of natural data and native speaker intuitions, I aim to demonstrate that cognate objects in Algerian Arabic pattern syntactically as adjuncts, thereby contributing to the broader typological and theoretical understanding of cognate object constructions.