Neuroplasticity, the brain’s ability to reorganize and adapt, is fundamental to learning and cognition, especially in second language (L2) acquisition. This chapter explores the complex relationship between neuroplasticity and L2 acquisition in Asia, a continent characterized by remarkable linguistic diversity. The authors examine how neuroplasticity, the brain’s capacity for reorganization and adaptation, underpins L2 learning, focusing on structural and functional changes in the bilingual brain. While acknowledging the “bilingual advantage” debate, the authors emphasize the influence of individual differences (age, motivation, and prior language experience) and diverse learning contexts on neuroplastic outcomes in Asian L2 learners. The authors discuss the implications for L2 pedagogy, advocating for learner-centered approaches that leverage neuroplasticity principles, such as immersive learning environments and task-based activities. Finally, the authors highlight the need for further research focusing on Asian contexts, longitudinal studies, and multimodal neuroimaging techniques to deepen the understanding of how neuroplasticity can optimize L2 learning in this diverse region.