The Languages of Tolkien's Middle-earth is a reference and explanatory book written by Ruth S. Noel, published currently by the Houghton Mifflin Company (Boston). It serves as a lexical and grammatical handbook for enthusiasts of Tolkien's invented and , and includes also the narrative of Tolkien as a linguist. As of 1980, however, the sections of the book pertaining to Elvish are outdated and in many places innaccurate, specifically in the area of learning Quenya and of comparisons between Quenya and Sindarin.