This is the first book to provide a broad coverage of Thai legal history in the English language. It deals with pre-modern law, the civil law reforms of the late 19th and early 20th centuries, and the constitutional developments post-1932. It reveals outstanding scholarship by both Thai and international scholars, and will be of interest to anyone interested in Thailand and its history, providing an indispensable introduction to Thai law and the legal system. The civil law reforms are a notable focus of the book, which provides material of interest to comparative lawyers, especially those interested in the diffusion of the civil law.