The original book cover

A Dictionary of Tolkien (ISBN 9781607109693) is a glossary-book written by David Day.

The book was first published on the 1st of January 2013. The book covers all the different peoples, locations, cities etc. of Middle-earth in alphabetical order with provided explanations. The book does not give much new information, however, because almost all information is gathered from Day's previous Middle-earth compendiums.