This book presents, for the first time, an overarching, trans-Scandinavian, comprehensive and comparable account of linguistic developments and practices in late modern urban contact zones. The book aims to capture the multilingual realities of all young people in urban contexts, whether they are of migrant descent or not. Taking a multi-layered approach to linguistic practices, chapters in the book include structural and phonological analyses of new linguistic practices, examine how these practices and their practitioners are perceived, and discuss the sociolinguistic potentials of speakers when constructing, challenging and negotiating identities. The book also contains three short overview articles describing studies of multilingual practices in Sweden, Denmark and Norway. The editors have aimed to make Scandinavian research on urban multilingualism accessible to scholars and students who don’t speak Scandinavian languages, and also to make a valuable contribution to the global study of multilingualism.