This book brings together research from diverse areas of Second Language Acquisition to provide a comprehensive account of how gestures contribute to language learning and teaching. Offering a multi-faceted perspective, it integrates empirical findings and theoretical insights from leading scholars in the field. The volume highlights how gestures support the development of second language vocabulary, grammar, and pronunciation, how they facilitate listening comprehension, and how they shape communicative and instructional practices across a variety of learning contexts. The findings offer valuable implications for both researchers and practitioners.