This is the first comprehensive, systematic overview of research on the acquisition of Russian as a second language. Drawing on classic and contemporary empirical studies from diverse learning contexts and proficiency levels, it synthesizes findings across all components of the language. Tania Ionin and Tatiana Luchkina expertly examine linguistic features and domains, factors affecting learning, theoretical frameworks, and methodological approaches in Russian SLA. They link insights from L2 Russian research to broader questions in second language acquisition and include an annotated guide to key L2 Russian corpora. This book also identifies critical gaps in the literature and outlines an agenda for future research. This cohesive and authoritative resource will be invaluable to advanced students and researchers in SLA, multilingualism, Russian and Slavic studies, applied linguistics, and education, particularly those with an interest in LOTEs (languages other than English) and Russian second language learning. It will also support those preparing to teach Russian as a second language.