This edited volume investigates the role of digital communication in relation to linguistic diversity and language education in today's digitally networked world. It aims to examine (1) how language(s) are (re)contextualized and (re)localized concerning other languages, multimodalities, semiotic resources, genres, and repertoires in various domains of digital communication and (2) what pragmatic functions digital communication may serve in terms of language education ? both in and out of classroom ? and pedagogy. The collection includes contributions exploring diverse digital venues in which language has multiple different roles and functions, illustrating micro- and macro-linguistic practices in varied areas of society, including education, politics, technology, media, and popular culture.