This handbook brings together contributions from the main experts in the field of multilingualism and language varieties (including dialects, accents, sociolects, and idiolects of specific speech communities) as expressed in fictional dialogue on-screen in films, and television series. The chapters included in the volume cover both the representation of these varieties and multilingual situations on screen as well as their translation into a range of languages. The handbook will thus be an essential resource for scholars and students in diverse fields including translation studies, audiovisual translation, linguistics, dialectology, film and television studies.