Limited research has investigated the effects of bilingualism on cognitive control (i.e., resolving inhibition) in persons with aphasia (PWA). Aphasia is an acquired language disorder from brain injury (i.e., stroke). This study examined reaction times and accuracy in a cognitive control task in mono- and bi-lingual healthy older adults and mono- and bi-lingual PWA. A significant effect of bilingualism was found for reaction time. This knowledge can guide treatment practices for bilingual PWA.