This book discusses salient moments of multilingual encounters and brings together contributions focused on the interplay between language use by individuals and societies, and language-related inequalities or opportunities for speakers. The chapters demonstrate how biographical and speaker-centred approaches can contribute to an understanding of linguistic diversity, how researchers can empirically account for lived experiences of languages, and how such accounts are embedded in a larger discussion on social (in)equality. Together the chapters make a powerful case for the importance of speaker-centred methodologies in multilingual and multilingualism research. The book is a rich source of theoretical and methodological reflections and will thus be a valuable resource for both experienced researchers and students beginning to explore biographical research methods.