A growing body of research on identity and language learning has investigated how immigrant learners construct their identities in the process of acquiring a second language (L2). Much of the research, however, is situated in Western contexts. This study looks at how three Thai immigrants acquired an L2, Cantonese, and constructed their identities in their host society--Hong Kong. Drawing on the data collected from semi-structured interviews, onsite observation, and informal conversations, this study shows that the three Thai immigrants built multiple identities that allowed them to have access to the target language learning resources and practices. They embraced selective acculturation by maintaining their Thai identity and preserving their cultural heritage, which had a positive influence on their acquisition of the target language. The study suggests that language learners need to claim powerful identities and exercise human agency in their interaction with target language speakers to facilitate language learning.