A Reference Grammar of Thai provides a clear, detailed and comprehensive guide to Thai grammar, designed for intermediate to advanced learners. Written by two leading experts on Thai, it places a special emphasis on functional accounts of its grammatical phenomena: the use of demonstratives, personal reference terms, the modality system, the aspectual system, pragmatic particles, verb serialization, relative clauses, question formation, passive and causative constructions, topic marking, and many more. Unlike any other book on Thai grammar, it draws on data from everyday spoken discourses such as informal conversation, group discussions, interviews and narratives, as well as non-technical written texts such as folk tales, short stories, and newspaper articles, to discuss grammatical phenomena at both sentence and discourse level. An extensive index is provided and examples are given in both Thai orthography and IPA symbols, making this an invaluable resource for linguists as well as students and teachers of Thai.