This volume provides a comprehensive overview of the research carried out over the past thirty years in the vast field of legal discourse. The focus is on how such research has been influenced and shaped by developments in corpus linguistics and register analysis, and by the emergence from the mid 1990s of historical pragmatics as a branch of pragmatics concerned with the scrutiny of historical texts in their context of writing. The five chapters in Part I (together with the introductory chapter) offer a wide spectrum of the latest approaches to the synchronic analysis of cross-genre and cross-linguistic variation in legal discourse. Part II addresses diachronic variation, illustrating how a diversity of methods, such as multi-dimensional analysis, move analysis, collocation analysis, and Darwinian models of language evolution can uncover new understandings of diachronic linguistic phenomena. Recipient of the 2021 Book Award from the Spanish Association for Applied Linguistics (AESLA)