With almost six hundred languages and dialects and around three and a half billion speakers, the Indo-European language family is the largest language family in the world, encompassing most languages in Europe (nowadays also widely spoken in many former European colonies), the Iranian plateau, and the northern Indian subcontinent. Written by an international team of experts, The Indo-European Languages offers in-depth discussions of the historical development and linguistic features of all major branches of the Indo-European languages in a comprehensive, single-volume tome. This third edition has been thoroughly updated and revised to reflect the latest research, ensuring accuracy and relevance throughout. This unique resource remains the ideal reference for advanced undergraduate and postgraduate students of Indo-European linguistics and languages, as well as for experienced researchers seeking an up-to-date survey of separate Indo-European branches and Proto-Indo-European reconstruction. It will appeal both to scholars and enthusiasts of historical linguistics, language variation, language typology and classical Indo-European languages.